Please answer this if you know it. I looked through my materials and could not find it anywhere. Could you please explain what they answer is and why? I want to learn from this rather than just get an answer.

The earth rotates because of the way it was formed. Our Solar System formed about 4.6 billion years ago when a huge cloud of gas and dust started to collapse under its own gravity. As the cloud collapsed, it started to spin.

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.

if they have a finite resultant