"This is the second activity in the repetition strategy" indicates that the word revisit would be the best word to use to sum up the idea since repetition strategy definitely suggests revisiting. Something which is repeated is done over again so in the act of re-doing it it means it is also re-visited.
The only line which demonstrates a simile (a comparison using the words <em>like </em>or <em>as</em>) is B) It is in the small things we see it. The child's first step, as awesome as an earthquake.<em />
