The focus of the replies here has been on communism. The survey was socialism or communism. That speaks to a poorly done survey. A preference for socialism should have been a separate question from a preference for communism. The other thing is most young people are going to think Canada or Western Europe when you say socialism which makes their replies a bit less onerous.
It is safe to assume that the responses favored socialism, European-style, not communism. We should take that as a sign that they are not seeing the current economy and social order as working for them. The alternative might work even less well for them, but they don’t know that. This has implications for all of us at the voting booth and elsewise.