Im not 100% sure, but I think the answer is C. If not, Im sorry for bothering you.
Explanation:
divide the objects weight by the acceleration of gravity to find the mass
Social interactions help lower the risk of Alzheimer diseases by stimulating the brain. Many studies show that if you use your brain more you have a lower chance of getting Alzheimer's.
Gases are less dense and the molecules are farther apart which means that it can be compressed
