Answer: We infer he left his keys in the locked car.
Explanation: Infer means to draw a conclusion from evidence we see that is not explicit. An common example is when you see smoke you infer there is fire. Some supporting excerpts would be when he checks his pockets, his panic, tries the door and finds it locked, and when he sees something on the passenger seat of the car. All these things are things we would do in the same situation if we left our keys in the car. Nowhere does it explicitly say he left his keys in the car but we can infer that he does based on his actions.
