# Equality of Languages: Empty string and Empty set [duplicate]

I was going through this exercise of automata on IIT Bombay's site, where they have asked this question as an exercise. I have answered $$none$$ but the ans given is $$option$$ $$1$$.

My doubt is $$φ^*$$ is $$ϵ$$ but in option 1 we are having a $$SET$$ $$CONTAINING$$ $$ϵ$$.

So how can these two be $$equal?$$