can someone help me? im really stumped, i will give brainliest. so please help. thanks. i really need it

Answer:
The answer is A.
Step-by-step explanation:
The question is basically asking which number, added to 3.5, gives you -4.3. You just have to do the operation -4.3 - 3.5 to get the answer. You just need to do the inverse. You should end up with -7.8.