When we write any essays or any literature stuffs and use a passive voice in the first sentence, do we have to write the whole thing in passive voice or active voice can also be used?

Answer the question on the screen plzzz

Kyle and his brother have a marble set of the marbles 12 are blue this represent 50 over a hundred of all the marbles what decimal is equivalent to 50 / 100

Comprehension the questions below refer to the selection "games at twilight." at the end of the story, ravi — a. feels victorious b. has become mature enough to shrug off a loss in a game c. feels defeated and insignificant d. is he has won the affection of the other children select the best answer from the choices provided a b c d