In reply to blackmountainbiker:
If I had been asked that, I would have looked at the statement and said yes based on the principal that I could fix pretty much anything on the bike. So whatever they meant by "fix a loose chain", I could fix. So whether that is to remove links or fit a new one due to chain stretch etc.
I suspect if you are asked a nonsense question but you feel generally you could fix most things on a bike, you might just say yes. If you are not confident fixing a bike, then the answer to the same nonsense question might be no.
As for puncture fixing, earlier in lockdown I was riding home from work on a section of cycle path. Two young guys (late teens/ early 20s) were looking puzzled at their upturned bike. I stopped to see if I could help. They had a puncture, and were trying to fix it with sellotape! I asked if they wanted one of my puncture repair patches, and they looked blankly at me. So I showed them what to do and they were amazed and asked of puncture repair kits were expensive and where could you get one. I found it quite sad that such basic knowledge has been lost. They were super keen to watch and learn what I was doing though, so I reckon they will now be able to do it themselves. I also was amused that they had obviously thought a bit about the possibility of a puncture as they had a pump with them - a double cylinder foot pump from the van! It took determination to carry that!