What do you need help with
I believe the answer is B.
Let's look at it with punctuation: My father, an expert in the field of astronomy, recently discovered a comet.
After reading it makes more sense to have the pauses. Hopefully that helps.
Answer:
Look for sentences that may seem connected to your subject or answer
Explanation:
depends on what they are talking about or doing but normally they may be suspenseful or up beat it all boils down to what subject it is
