One's motivations and emotions are controlled by the forebrain.
Thus,
among the four choices above, the answer is none other than a. forebrain
Forebrain is the anterior part of the brain. There is what we call the hypothalamus that also controls emotions. Love has to be credited to this part.
For example:
"I love you with all my heart."
The heart does not feel emotions, the hypothalamus does. So instead of heart we replace it with,
"I love you with all my hypothalamus"
Answer: The gravity of the Sun
Explanation: The gravitational pull of the sun is strong enough to keep the planets rotating.
Industrialization started in Britain and eventually spread worldwide. new machines were invented in order to speed up the manufacturing process and receive more profits. cotton mills, steam ships, and many other technological advances allowed for prosperity worldwide, and an increase and trade for products.
