The correct answer would be a. "Laughing and talking" is not a way to start a sentence.
A run-on is a sentence that is too long, and either has no, or incorrect punctuation. So, that wouldn't be it.
A comma splice is a sentence that has a uneeded comma. This, has none.
Therefore, the answer would be a.
What film is it supposed to be about?
Answer:
That restaurant is famous for its delicious, homemade pies and cakes.
Cakes and Ale means "lively enjoyment"
Cakes and ale are "good things in life" and both are things that can be enjoyed and considered pleasurable.
