Answer:
The option that correctly edits the sentences for mistakes in end punctuation is:
"Jacob was not sure what made him turn around and go back home. However, he sure was glad he had. When he got there, he realized that he had accidentally let the cat escape before locking the front door. What a catastrophe that would have been! And what would his mom have said?"
Step-by-step explanation:
The correct punctuation of this paragraph by following the structure of the sentences has to present the first three sentences as regular sentences by ending them with a full stops, as the last two are the ones that keep the shocking information by using the exclamation mark to demonstrate that the situation would be horrible if he had not come back to take the cat, and the last one as a question since it follows the structure Wh + Would + sub + have + verb.