I feel the best answer is B) have food allergies.
It is not a problem for students who do not eat lunch so we can rule out C
It does not mention anything about the cost involved so that rules out D
It is a problem if you don't like fish, however, there are a large number of people who have nut allergies and if peanut butter squares are being prepared around any of it that could be an issue.
He thought the colony needed to attract many new settlers.
