Es la B y la D espero que te ayude
First of all, you need to translate this sentence in order to find out which word to use to fill the gap.
'A comb and ___ are used to comb or brush your hair.'
So, the word we need here is a brush. In Spanish, the word brush is el cepillo.
Do you mean ponder? Ponder means to ask it means to ask a question
La luna está en el espacio.
"the moon is in space"