What is the best example of forces acting in the same direction?
A boy lifting his chest off the ground doing a push up
Two football players pushing a tackling sled
A person pulling out of a garden hose from its reel
Two dogs playing tug of war with a rope

Two football players pushing a tackling shed

Explanation:

They're working together to push it. (I also answered this and that was the correct answer)

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.

it would be c. predictability