He should, confirm his records are accurate and include all transactions.
Good Luck.
'Before they ate a snack' is the correct answer, it is the adverbial clause of time. A cannot be correct because that is an independent clause, and adverb clause has to be dependent. B isn't a clause at all.
The Latin root for harmful and Dangerous most likely means B. Noxious
If you assume something about someone, you could be acting on false information and that can lead to trouble.