Answer:
A) Nature, in the form of the incoming tide, startles the speaker with its menace, anger, and strength.
Explanation:
Based on the excerpt from “I started Early—took my dog”, it is described by the speaker that he is moved by no man but he became aware of the tide when it started to rise over his body, threatening to eat him up.
The speaker is so moved by the tide because Nature, in the form of the incoming tide, startles the speaker with its menace, anger, and strength as it begins to rise and threaten to swallow him up.