Read the sentence.The squirrel reached for the birdfeeder, for he saw it was filled with an abundance of sunflower seeds.

The first “for” shows the relationship between “reached” and “the birdfeeder,” so it is a preposition. The second “for” connects two independent clauses—“The squirrel reached for the birdfeeder” and “he saw it was filled…”—so it is a conjunction. The correct choice is “a preposition and a conjunction.”

AI-written and checked against the verified answer.