Question

complete the sentence with the better correlative conjunctions. the thorny covering of the durian - a large fruit shaped like a rugby ball - can be opened up __ by stepping on the fruit with enough force to crack the husk __ by digging into it with a sharp knife. either... or neither... nor

Explanation:

"Either...or" is used to present two options. In this context, there are two ways to open the durian (stepping on it or digging with a knife), so "either...or" is the appropriate correlative conjunction.

Answer:

either...or