Meaning: 'Broad' means wide or extensive, indicating a large variety.

Wrong options:

• coastal: 'Coastal' is an adjective that describes something related to the coast, but it does not appropriately describe the range of techniques.
• digital: 'Digital' is an adjective that refers to technology or data represented in numerical form, which does not fit as a descriptor for the range itself.
• contribute: 'Contribute' is a verb that means to give or add to something, which does not fit grammatically as it cannot modify 'range'.
• exact: 'Exact' is an adjective that means precise or accurate, which does not convey the intended meaning of variety in this context.
• offshore: 'Offshore' is an adjective that refers to something situated at sea, which does not describe the range of techniques.
• address: 'Address' is a verb that means to deal with or discuss, which does not fit as a descriptor for the range of techniques.
• area: 'Area' is a noun that refers to a specific space or region, which does not grammatically fit as a modifier for 'range'.

Correct answer: digital

Explanation: The term 'digital' is an adjective that describes the type of aerial photogrammetry being used. It fits grammatically as it modifies 'aerial photogrammetry' and contextually indicates the technological aspect of the technique.

Meaning: 'Digital' refers to technology that uses numerical data, often associated with computers and electronic devices.

Wrong options:

• coastal: 'Coastal' is an adjective that relates to the coast, but it does not accurately describe the type of photogrammetry being referenced.
• broad: 'Broad' is an adjective that describes a wide range, but it does not specifically relate to the type of photogrammetry.
• contribute: 'Contribute' is a verb that means to add to something, which does not fit as a descriptor for photogrammetry.
• exact: 'Exact' is an adjective that means precise, which does not apply to the type of photogrammetry in this context.
• offshore: 'Offshore' is an adjective that refers to something at sea, which does not describe the type of aerial photogrammetry.
• address: 'Address' is a verb that means to deal with or discuss, which does not fit as a descriptor for photogrammetry.
• area: 'Area' is a noun that refers to a specific space, which does not fit grammatically or contextually.

Correct answer: offshore

Explanation: The word 'offshore' is an adjective that describes areas located at sea, which fits grammatically as it modifies 'areas' and contextually indicates the specific locations being discussed in relation to bathymetry.

Meaning: 'Offshore' refers to something situated away from the shore, typically in the sea.

Wrong options:

• coastal: 'Coastal' is an adjective that describes areas near the shore, which does not fit as it contradicts the context of bathymetry being discussed.
• digital: 'Digital' is an adjective that relates to technology, which does not describe the location of the areas in question.
• address: 'Address' is a verb that means to deal with or discuss, which does not fit as it does not describe a location.
• exact: 'Exact' is an adjective that means precise, which does not apply to the description of areas in this context.
• broad: 'Broad' is an adjective that means wide, which does not accurately describe the location of the areas.
• contribute: 'Contribute' is a verb that means to add to something, which does not fit as a descriptor for areas.
• area: 'Area' is a noun that refers to a specific space, which does not fit grammatically or contextually.

Correct answer: address

Explanation: The term 'address' is a verb that means to deal with or discuss a particular issue. It fits grammatically as it indicates the action being taken by geoscientists in relation to coastal change.

Meaning: 'Address' means to tackle or focus on a specific issue or topic.

Wrong options:

• coastal: 'Coastal' is an adjective that describes something related to the coast, which does not fit as an action word in this context.
• digital: 'Digital' is an adjective that refers to technology, which does not fit as a verb describing an action.
• exact: 'Exact' is an adjective that means precise, which does not fit as it cannot describe an action.
• broad: 'Broad' is an adjective that means wide, which does not fit as it cannot describe an action.
• offshore: 'Offshore' is an adjective that refers to something at sea, which does not fit as a verb describing an action.
• contribute: 'Contribute' is a verb that means to add to something, but it does not convey the specific action of dealing with coastal change.
• area: 'Area' is a noun that refers to a specific space, which does not fit grammatically or contextually.

Correct answer: coastal

Explanation: The word 'coastal' is an adjective that describes the type of change being discussed. It fits grammatically as it modifies 'change' and contextually indicates the specific focus of the studies being conducted.

Meaning: 'Coastal' refers to anything related to the coast or shoreline.

Wrong options:

• digital: 'Digital' is an adjective that relates to technology, which does not describe the type of change being referenced.
• address: 'Address' is a verb that means to deal with or discuss, which does not fit as a descriptor for change.
• exact: 'Exact' is an adjective that means precise, which does not apply to the type of change in this context.
• broad: 'Broad' is an adjective that means wide, which does not accurately describe the type of change being discussed.
• offshore: 'Offshore' is an adjective that refers to something situated at sea, which does not fit as it does not describe the type of change occurring on the coast.
• contribute: 'Contribute' is a verb that means to add to something, which does not fit as a descriptor for change.
• area: 'Area' is a noun that refers to a specific space, which does not fit grammatically or contextually.