The correct answer is letter a. The body takes a lot of time and energy for our body to break down more complex foods, while simple foods are broken down more quickly and easily absorbed by the body. Complex foods contain more ingredients and more nutrients that are hard to be broken down, not like simple foods, such as candy or sugar that can be easily broken down by the body because of its simple structure.
B) Brain...spinal cord, for some reason I keep ending up on questions you've asked.
If the pitcher holding the ball that mean if it doesn't have any motion so it has Potential energy in that case.
But in other case if the pitcher throwing or catching the ball it means the ball have motion so it has Kinetic energy.
