Hi David, I am a native English speaker learning French. Sentence 1 is correct, sentence 2 does not make sense in fact.The test is hard FOR a person, not to. Try to fit the sentence in a category below: To: Expresses direction/ transfer towards, ex: She walked to the door; He gave some money to charity. Expresses purpose (verb + to + verb), ex: We ran to catch the train Shows a time period, ex: He works from 9 a.m. to 5 p.m. Indicates a limit, ex: The cup was full to the top For: Expresses advantage/disadvantage of a person/ thing, ex: He opened the door for me. This is the category your sentence comes in. Expresses reason (because of), ex: He runs for his health Shows the duration of time, ex: He works for 8 hours a day Indicates a distance ex: He ran for 6 miles Keep learning. You are doing great! :)