I'm not sure who is actually responsible for the 'reasons for closing' choices when voting to close so I don't know how to get it edited. One of the options is that it is off topic. But that reason does not actually link to https://academia.stackexchange.com/help/on-topic, the only link is to a meta discussion about undergraduate being within scope in certain situations. As well as voting to close, I left a comment that the content of research is off topic and included the link, but that sort of thing should happen automatically.
This seems like a good idea to me. Let's wait a little while to make sure there is a consensus, and then we'll make the change.
Edit 22 July 2020: This is done.