Respuesta :
the answer in my opinion that makes most sense is a because the passage states that a storm came in while the other answers seem off topic to what the information the passage gave
Answer is: a. The storm damaged the air conditioner.
Because air conditioner is outside, storm could damage it.
There is not enough information that the make and model of the air conditioning unit is not compatible for his house, that David has been using his air conditioner too much or the air conditioner was vandalized.