Question

what kind of sentence is this?
which do you think is the most important environmental issue of our time - water conservation or the protection of natural habitats?
declarative interrogative exclamatory imperative
submit

Explanation:

The sentence asks a question (starts with "Which" and ends with a question mark), seeking the reader's opinion on an environmental issue. Interrogative sentences are used to ask questions, while declarative makes statements, exclamatory shows strong emotion, and imperative gives commands. So this is an interrogative sentence.

Answer:

B. interrogative