Answer:
C
Explanation:
A compound sentence is 2 sentences joined together by a FANBOYS conjunction and a comma. In this case, the A in FANBOYS, standing for "and," is used. You can tell it is a compound sentence because before AND after the conjunction and comma, there is a complete sentence.
"Scrooge made amends for his unkindness." is a complete sentence.
"Everyone responded warmly to him." is a complete sentence.