Final answer:
The example of a compound sentence given is 'If the car still won't crank, the battery may not be your problem,' as it contains two independent clauses joined by a conjunction.
Step-by-step explanation:
An example of a compound sentence from "How to Jump-Start a Car Battery" is option B: If the car still won't crank, the battery may not be your problem. A compound sentence typically contains two independent clauses joined by a conjunction. In this case, the sentence has two independent clauses which are 'If the car still won't crank' and 'the battery may not be your problem' joined by the conjunction 'the'.