You can repair or make anything. If I were to make or repair something by myself it would be either doing a diy craft. Or just fixing the lights. I would either do a diy on a Christmas gift for a family, since Christmas is coming up. But if I were fixing the lights by myself I would grab a latter and a screw driver. And simply fix it.
Yes the correct answer is "said" (b). If you get stuck on a similar question, it helps to read the sentence with each comma to hear which makes sense.
