Answer:
Simile means the comparison of one thing with another thing of a different kind like eg she is innocent like an angel.
Explanation:
The given option B is correct as in the line comparison is made by using the phrase wave upon wave, shall break or pass as an army tread. Here the comparison is made either u LL break like a wave upon wave or u will pass like army tread.
In other options, contrary to this metaphor is used not the comparison is done.
