Answer:
it's number 3 for b and 1 for a
This is correct. This is a reflexive verb that you are doing to yourself. This translates to, "Normally I brush the hair". If it was something like "Normalmente me cepillo el pelo de Anna" it would be incorrect because you are doing it to Anna, not yourself.
Una nina- girl
Un nino- child, childish
Un hombre- Man
Un muchacho- Boy, youngster
Answer:
las nubes son bonitas
las ranas estas gordas
las trancas y las moscas son muy asquerosas