E (I am sorry if I got this answer wrong).
According to science, yes – happiness, indeed, has a heritable component. It’s a finding that is surprising and not surprising at the same time. It's surprising because of our culturally-sanctioned convictions that with our choices, thoughts, and behavior, we have the final say on how well we function in our lives, not our circumstances. But it's also not surprising because if our genes play a part in shaping who we are in the world, they will also have a say in how we pursue and find happiness. People might inherit genes that put them in advantageous or less favorable positions. Depression is genetic...
A. Fat storage would not aid in the survival of the animals.
Sorry can’t help if we can’t hear the audio
A. Correlation coefficient is simply just a number that shows the strength of the correlation. (ranges from -1.0 -> +1.0)
