The answer is b. Estoy enseñando
It's comunicas because the question is in the tu form.
You don't serve your family, or know them (because you already do).
Ok I don’t know what it’s the lesson 4, but you have to use “Usted” because you tell your mom how make your favorite recipe, for example you can say, “Mamá usted me puede hacer mi receta favorita de esta manera” you tell her how make.
I hope this help you!❤️
You can put “cuenta” which means account
