She did not drive it at all that day , and I have also installed previously a battery cut off since she has a slow drain somewhere in the car that I do not have the technical know how or time to fix . Today , she calls me again and it wo n't start again . I go out , turn it over , and its not firing like yesterday . I pull the plug wires and check for spark , no spark .

Question: What is n't firing ?
Answer: the phone that she called withThe carNone of the above choices .the battery cut off