Which sentence uses correlative conjunctions correctly?
A) Sarah was both fluent in French and German.
B) Customers who order products at Amazon.com enjoy not only good prices but also fast delivery.
C) Employees must either attend diversity training on Thursday or Friday.

Question

Which sentence uses correlative conjunctions correctly?
A) Sarah was both fluent in French and German.
B) ​Customers who order products at Amazon.com enjoy not only good prices but also fast delivery.
C) ​Employees must either attend diversity training on Thursday or Friday.

Quizplus · Accepted Answer

The sentence uses the correlative conjunction "not only … but also" correctly to show two related ideas with emphasis.

Option A is also correct, but it uses only one pair of correlative conjunctions ("both … and"). 
Option C is incorrect because it uses the correlative conjunction "either…or" incorrectly. "Either" express a choice between two alternatives, but the sentence doesn't present two alternatives.

Which Sentence Uses Correlative Conjunctions Correctly