Answer:
Correct answer is A. Mussolini was removed from power.
Step-by-step explanation:
A is correct because after this events Italy capitulated in September and Mussolini moved to Northern Italy, where Republic of Salò was established with him at the top.
That is why B is not correct as Mussolini was helped by the Germans to settle there.
C is not correct as invasion of that area didn't happen as a direct result of the attack on Sicily.
D is not correct as Mussolini's forces were defeated and devastated.