Question

complete the sentence with the best correlative conjunctions.
deadly nightshade is a lethal plant that should be ____ eaten ____ touched. when eaten, the plant causes paralysis; when touched, the leaves may irritate the skin.
not only...but also
both...and
neither...nor
submit

Explanation:

The sentence is about a plant that should not be eaten and not be touched (since both actions are dangerous: eating causes paralysis, touching causes skin irritation). The correlative conjunction "neither...nor" is used to connect two negative ideas, indicating that the plant should be neither eaten nor touched. "Both...and" would imply the opposite (that it should be eaten and touched), which is incorrect. "Not only...but also" is used for adding or emphasizing positive/related actions, not negatives here. So "neither...nor" fits the context of the plant being dangerous to both eat and touch, so it should be neither.

Answer:

neither...nor