To determine the word most similar in meaning to "drive" as used in the context of a man swimming in the ocean, we must consider the context in which "drive" is likely being used. Typically, "drive" can refer to a strong motivation or force pushing someone to move forward.
Among the provided options:
- meander suggests a wandering or aimless movement, which is not similar to a "drive."
- tear implies a swift, forceful movement, which may somewhat align with "drive."
- emerge suggests coming out or appearing, which doesn't directly relate to "drive."
- drift implies a more passive movement, lacking intention or force, which is not synonymous with "drive."
Given the meanings of the words, tear is the most similar to "drive," as it involves a vigorous, intentional action, much like being driven to swim with purpose.
So the answer is tear.