The question below refers to the selection "by the waters of babylon." the narrator’s voice is best described as —
a. self-assured but inexperienced.
b. weary and worldly-wise.
c. young but all-knowing.
d. cynical and experienced.

I believe the correct answer is A) self-assured but inexperienced, but I am not 100% sure.

C. uneven parallelism

Uneven parallelism means that the clauses within your sentence have the same grammatical structure. If you look at the clauses in the sentence "with a keen sense of observation" and "who dedicated long hours in the lab" they do not have the same grammatical structure. Thus the sentence suffers from uneven parallelism.