Answer:
I think true? I mean it depends on the person, it can be a sign of depression but it doesn't necessarily mean they have depression. Not quite sure how to answer that.
More info I don't know if this will help or not but it depends what they mean by unmotivated. If its just lack of interest in something, I'd say that's pretty normal, but if said person is unmotivated as in unmotivated to do necessary things like self care because it seems pointless, or just in general failing to do tasks they would normal complete with easy because they seem to have no purpose, then that is usually a sign of depression.