Question

complex sentences
fill in the blank.
we popped popcorn before we started the movie.
the conjunction in the middle means _?_.
a dash is needed
no comma is needed
an exclamation point is needed

Explanation:

When a subordinating conjunction like "before" comes in the middle of a complex sentence (main clause - subordinating conjunction - subordinate clause), no comma is needed. If the subordinating conjunction starts the sentence (subordinate clause - main clause), a comma is used. Here, "before" is in the middle (main clause "We popped popcorn" - "before" - subordinate clause "we started the movie"), so no comma is required.

Answer:

no comma is needed