Answer: yes it is perfect and neat a lot, a lot of question marks good
Explanation:
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.
7.09 is not greater than 7.2 because .09 is on the hundren place while .2 is on the tenth place. If you wanted to know whether 7.09 is greater 7.2, you had to move one time on the right for 7.2 and it will give you 7.20 which is now in a hundren place.
So if you look closely 7.20 will be greater than 7.09
For #2, he reacted that way because it's his view and he says "after all the stuff she said about you?"