Soy alta.
Mi amigo es muy amable.
Mi amiga es una profesora
(Estar is for describing an emotion, state of being, and location. Ser can be used to talk about permanent or concrete things like someone's profession, or characteristics.)
1. is the correct answer ! I just did this
I use this app called Photomath is really cool and it gives you the answer by just taking a picture and also it shows you how to do it, they have graphics and things like that