I mean a candidate should be able to distinguish their contribution to a project in some more fine grained way than this. If they come from freelance and say "I wrote the code on my own" that's fine but maybe you could mention how you communicated with the client to establish requirements and milestones and get to a successful delivery.
If you worked in a team you should be even more able to explain your individual contribution & the context in which you worked.
This is not a trick question. A good answer is "I did x, y, and z tasks, which required a, b, and c interactions with the world around me to make sure I was doing the right work and meeting expectations".
I once failed this question at a FAANG company. We were talking about a recent project that my company did with Pivotal. So like every project Pivotal does, we spent about one day a week dividing up the upcoming work into tiny pieces, then we spent the other four days pair programming by doing whatever the top task on the backlog was. Predictibly, on a team that had 3 pairs, this means I or my pair did about 1/3 of all things, distributed somewhat uniformly throughout the project.
"What parts are you solely responsible for?" 0 things, the same as everyone else who worked on this project! Wrong answer though.
If you worked in a team you should be even more able to explain your individual contribution & the context in which you worked.
This is not a trick question. A good answer is "I did x, y, and z tasks, which required a, b, and c interactions with the world around me to make sure I was doing the right work and meeting expectations".