Read the sentence.

The harsh wind scoured the scant remaining leaves from the trees, and a desolate landscape remained in its wake.

The underlined portion of the sentence is

a coordinating conjunction.
a dependent clause.
an independent clause.
a subordinating conjunction

i'm gonna say the  2 one :(

Explanation:

I believe the answer to your question is an independent clause

The underlined portion of the sentence is an independent clause.

An independent clause refers to a clause that can stand alone as a sentence. An independent clause, like all clauses, contains a subject and verb. When there are no dependent clauses in the same sentence as an independent clause, the independent clause is a simple sentence.

An independent clause does not need to be joined to any other clauses, because it has all the information necessary to be a complete sentences.