Describe a diet that can lower your stress level. what does the day look like? what kinds of foods and drinks are in the diet? what quantities of food or in the diet? include your thoughts about how the stress hormone cortisol or the feel-good neurotransmitter serotonin relate to the diet the reduce the stress

I couldn't find that much but I found the same question as yours and this is another person comment. :3 hopefully that help :D
A diet that can lower your stress looks like something with a lot of fruits and vegis. Making sure you get a least one hour of exercise a day. Plus drinking tons of water and a some juices. Foods I'd consider would be pineapples, strawberries, bananas, cucumbers, carrots, and etc. 

what effect does exercise have on the nervous system?

the answer is c.