Iclean my car. yo limpias mi carro. yo limpiamos mi carro. yo limpio mi carro. yo limpia mi carro.

Yo limpio mi carro.

Since limpiar is an -ar verb, when you conjugate it into the first person of the present tense, you simply replace the -ar ending with -o. 
So, limpiar turns into limpio.

Yo limpio mi carro is the correct answer

Bruno está hablando con su hermana

Bi’m pretty sure i am pretty fluent in spanish so it should be right