I can't see the examples. But assonance means a resemblance in the sounds of words or syllables either between their vowels (e.g., meat, bean) or between their consonants (e.g., keep, cape).
Answer:
robbed,used,travelled,carried,hurried,entered,started,dropped,
Hi!
I agree that the answer is D. Retiring. It seems to be the most sensible choice.