Explanation:

- The word "Turbid" means cloudy, muddy, or not clear, usually used to describe liquids.

- Option 1: Deep - While "deep" refers to a great distance from top to bottom, it doesn't capture the clarity aspect related to "turbid."

- Option 2: Muddy - This is actually a synonym of "turbid" as it also means unclear or not clear.

- Option 3: Clear - This is the opposite of "turbid" because it implies transparency and lack of cloudiness.

- Clear: Right choice as it directly contradicts the meaning of "turbid."

- Option 4: Fresh - Typically refers to something new or recently made; not directly opposite to "turbid."

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