Meaning: 'Without' means 'in the absence of' or 'lacking,' indicating that life cannot be sustained if fresh water is not available.

Wrong options:

• Despite: 'Despite' suggests a contrast or concession, which does not fit the context of needing water for survival.
• With: 'With' implies having something, which contradicts the intended meaning of lacking water for survival.
• As: 'As' is used to indicate a role or function, which does not appropriately convey the necessity of water in this context.

Correct answer: fit

Explanation: The word 'fit' describes a state of health and well-being, which is appropriate in the context of needing fresh water. It fits grammatically as it follows the structure of the sentence, indicating a condition for humans to maintain their health.

Meaning: 'Fit' means being in good health or physically capable, emphasizing the importance of fresh water for maintaining health.

Wrong options:

• excited: 'Excited' refers to a state of enthusiasm or eagerness, which is unrelated to the context of health and well-being.
• here: 'Here' indicates a location, which does not logically connect to the idea of health in this context.
• up: 'Up' is vague and does not convey a clear meaning related to health or fitness.

Correct answer: deep

Explanation: The word 'deep' describes the significant distance below the Earth's surface, fitting both grammatically and contextually as it explains the difficulty in accessing fresh water. It aligns with the overall message about the scarcity of accessible fresh water.

Meaning: 'Deep' means far down from the surface, indicating that the water is located at a considerable depth, making it hard to reach.

Wrong options:

• wide: 'Wide' refers to the extent of something horizontally, which does not apply to the depth of water.
• hard: 'Hard' describes a texture or difficulty, which does not accurately convey the concept of water being inaccessible due to depth.
• common: 'Common' suggests something that is frequently encountered, which contradicts the idea of fresh water being scarce.

Correct answer: can

Explanation: The word 'can' indicates the ability to do something, fitting grammatically and contextually as it expresses the potential to use the available fresh water. It aligns with the positive sentiment of having a significant amount of water to utilize.

Meaning: 'Can' means to be able to, indicating that there is a possibility to use the fresh water available.

Wrong options:

• won't: 'Won't' indicates refusal or inability, which contradicts the positive context of being able to use the water.
• don't: 'Don't' implies a lack of action or ability, which does not fit the context of having water available for use.
• cannot: 'Cannot' indicates an inability, which is contrary to the message that there is water available to be used.