Meaning: 'Drinking' refers to water that is safe for human consumption.

Wrong options:

• eating: Eating refers to the act of consuming food, which does not relate to water supply.
• filter: Filter is a verb and does not fit as a descriptor for a water supply.
• soil: Soil is a noun that does not describe a type of water supply.
• set: Set is a verb or noun that does not relate to the context of water supply.
• drink: Drink is a verb and does not function as an adjective in this context.
• pollution: Pollution is a noun that does not describe a type of water supply.
• similar: Similar is an adjective that does not fit the context of describing a water supply.

Correct answer: filter

Explanation: The verb 'filter' is appropriate here as it describes the action that the municipal water treatment plant must take to remove herbicides from the water. This fits grammatically and contextually, as it directly relates to ensuring water safety.

Meaning: 'Filter' means to remove impurities or unwanted elements from a substance, in this case, water.

Wrong options:

• eating: Eating is a verb that does not relate to the action of treating water.
• drinking: Drinking is a verb that does not fit as an action performed by the water treatment plant.
• soil: Soil is a noun that does not describe an action related to water treatment.
• set: Set is a verb that does not convey the action of purification in this context.
• pollution: Pollution is a noun and does not describe an action that can be performed by the plant.
• similar: Similar is an adjective that does not relate to the action of filtering water.

Correct answer: soil

Explanation: The noun 'soil' fits grammatically as it serves as the object of the verb 'bind.' It is contextually relevant because it refers to the medium in which crops grow and with which herbicides can interact.

Meaning: 'Soil' refers to the upper layer of earth where plants grow, which can absorb chemicals.

Wrong options:

• eating: Eating is a verb that does not relate to the context of herbicides and their interaction with crops.
• drinking: Drinking is a verb that does not fit as it does not relate to the binding of chemicals.
• filter: Filter is a verb and does not serve as a noun in this context.
• set: Set is a verb or noun that does not relate to the binding of herbicides.
• pollution: Pollution is a noun that does not describe a medium for binding chemicals.
• similar: Similar is an adjective that does not fit as it does not refer to a physical substance.

Correct answer: pollution

Explanation: The noun 'pollution' is appropriate here as it describes the negative impact of excess herbicides in the environment. It fits grammatically as the object of the verb 'minimise' and is contextually relevant to the discussion of herbicide runoff.

Meaning: 'Pollution' refers to the presence of harmful substances in the environment, in this case, herbicides in water.

Wrong options:

• eating: Eating is a verb that does not relate to the context of environmental impact.
• drinking: Drinking is a verb that does not fit as it does not describe a type of environmental issue.
• filter: Filter is a verb and does not serve as a noun in this context.
• soil: Soil is a noun that does not describe the negative impact of herbicides.
• set: Set is a verb or noun that does not relate to the concept of environmental contamination.
• similar: Similar is an adjective that does not fit as it does not describe a type of pollution.