Amain clause that can stand alone or function as a whole sentence is a(n) independent clause relative clause subordinate clause

The answer is indeed an independent clause.

Explanation:

An independent clause is a sentence that contains a subject and predicate. It's called independent because it is able to express a complete thought and stand alone as a sentence.

A subordinate clause, on the other hand, does not express a complete thought. It depends on the main clause to make sense. And a relative clause is not an essential part of the structure. It adds some information to it, but it can be removed from it without affecting the general meaning.

we should all just get dogs.