While walking down the hallway, you give your professor a high-fiveWhich branch of the nervous system did you use?

You used physical coordination to do so

Explanation:

This is since your Nerves, spine and Brain were in balance or were coordinating together.

i think life is life. many could argue that life is ‘nice’ or ‘fun’ but in the end, it is immaterial and will end. nihilism is my philosophy. nothing matters in the end so why make an effort?

answer; (c); /out to the side and directly under the dogs neck.