Final answer:
The best description of the paragraph is that the pirates did not believe Caesar would execute them, as they had underestimated his threats while he was their prisoner.
Therefore , option C is correct
Step-by-step explanation:
The best sentence that describes the provided paragraph is: C) Pirates didn’t believe Caesar would kill them because he was their prisoner. This statement summarizes how Julius Caesar, despite being held captive by pirates, maintained an attitude of superiority, even demanding a higher ransom for his release and making threats of revenge, which the pirates took lightly. Ultimately, after his release and subsequent capture of the pirates, he followed through on his promise and crucified them, which they had previously not taken seriously.