Sentence improvement: maintain parallel structure in comparison (gerund vs. infinitive) Original sentence: "Making friends is more rewarding than to make enemies." Choose the option that restores parallelism.

Concept
Parallel structure demands that forms on both sides of a comparison match. Since the first element is a gerund ("Making friends"), the second should also be a gerund: "… than making enemies."

Option analysis
making enemies — exact parallel form; correct. ✅Other options change the meaning or the grammatical form (infinitives/adjectival phrases) and break parallelism.

Final Answer
"Making friends is more rewarding than making enemies."