I was proofreading some text for a friend and I stumbled across this sentence:
Glen, along with his close group of friends, took their first trip to Hawaii in 1986.
My question is this:
Is this correct, or should their first trip really be his first trip? I see the phrase between the commas as an nonessential phrase, and it appears to me that the sentence should be written so that it could stand alone without it. Therefore, to me it seems as though his first trip would be correct. However, the author is of the opinion that since there are multiple people going on the trip, their first trip is appropriate.
(My "real" answer would be to rewrite the sentence to avoid this issue in the first place, but I'm still curious.)