Answer:
A.) Heating and Air Conditioning Mechanic
Step-by-step explanation:
I am not sure why the other guy above me said D.) Mechanical Door Repairer. That doesn't really make much sense, knowing that it's constantly warm inside Blake's house during summer.
A seems more reasonable to me. Down below is proof that this answer should be correct. (I always like to show proof so it's a definite answer).