Can someone me with these 3 questions of ya can

For question three it is B distributive cause you distributing 1/2.

1/2( .7+ 4 ) >. ( 1/2 x .7 ) + ( 1/2 x 4)

1/4 because there is 4 grades.

i'm assuming that it's c.)   volcanoes built the mountains and earthquakes tore them down.