Are the underlined words in the sentence an independent clause, a subordinate clause, or neither?

After the sun sets, turn on the porch light.

A.

subordinate clause

B.

independent clause

C.

neither

The underlined words in the sentence are "After the sun sets".

The underlined clause given above is an example of a subordinate clause. A subordinate clause is defined as the clause that cannot stand alone because its thought is incomplete. It needs the independent clause to make it ideally understandable.