Which sentence is a compound sentence? a. they stood and clapped as the maestro took a bow. b. robert frost wrote the famous poem “the road not taken.” c. she was disappointed, but she accepted second prize with grace. d. if no one is brave enough to stand strong, we will have no more heroes.

The compound sentence is letter C: She was disappointed, but she accepted second prize with grace.  

Sentence structures could be simple (one independent clause), compound (two independent clause with coordinating conjunction), complex (a subordinate & independent clause) and compound-complex sentences (subordinate & two independent clause). These include clauses, conjunctions, coherence and balance and even to the number of words you use in your subject and predicate. The benefit of complex or compound sentences is that it could give you more explanation on the subject or topic of the sentence. This gives you a much more understanding on what the sentence is trying to portray or to message to give.