Question

which sentence uses this meaning of file?
file verb to smooth sharp or rough edges
damon keeps a file of old birthday cards from friends and family.
before the party, jennifer will file her nails and then paint them red.

Explanation:

We need to find the sentence where "file" means "to smooth sharp or rough edges". In the first sentence, "file" is a noun referring to a collection of items. In the second sentence, "file her nails" means smoothing the edges of her nails, which matches the given definition of "file" as a verb to smooth sharp or rough edges.

Answer:

Before the party, Jennifer will file her nails and then paint them red.