Absolutely. A zine can indeed be a comic. Zines have no strict rules, and if someone wants to use it to showcase a comic story or art, that's completely possible and common in the world of independent publishing.
Sure, a zine can totally be a comic. A zine is a self-published, often handmade publication, and comics can be part of that.
Yes, it can. A zine is very flexible and can take many forms, including being a comic. It gives creators the freedom to express their ideas in various visual ways.