it's either a or b. I'd have to read the rest if the article. but from what I read I think its b
C. I would like to visit the Kinshasa,but I understand the city is unsafe for foreigners.
Do not confuse the words affect, effect, and impact, each of which can be used both as a verb and as a noun. Avoid incorrectly using impact as a verb in place of affect or as a noun in place of effect. Affect as a verb means "to influence." Impact as a verb means "to hit with a blow".
The rhetorical device used in this sentence is repetition.
Hope this helps =)
