Question

complete the sentence.
installing rooftop solar panels has reduced my familys monthly electricity bills to practically nothing, lessened our dependence on fossil fuels, and
______.
could possibly enhance the value of our home
possibly enhanced the value of our home
submit
work it out
not feeling ready yet? these can help:
identify coordinating conjunctions
use parallel structure
use the correct pair of correlative conjunctions

Explanation:

The sentence requires parallel structure. The existing verbs are "reduced" and "lessened" (past tense), so the third verb must also be past tense to match. "Possibly enhanced" is past tense, while "could possibly enhance" is conditional present, breaking parallelism.

Answer:

possibly enhanced the value of our home