Am i rightt if not pls help

There’s a one story house everything’s purple , the sofa the walls everything what color is the stairs

Name the primary colors. why are these colors considered the only “primary colors”?

Will give brainlest! for graphic design i have to draw a personality split self portrait ( half is what people see me at first glance and the other half is my personality). idk what i should put on my personality side. someone me give ideas on what to draw ( doesnt exactly have to be my personality , there just has to be something )