Everyday our circadian clock gets reset by about:

About 24 hours

Explanation:

The temporal pattern of genes being switched on and off starts afresh once every 24 hours, giving us a near perfect daily clock. Circadian clocks do more than tell us when to feel sleepy and when to wake up. They are found in almost all organ systems of our body, such as in the brain, heart, and liver.

Hope this helps

Correct me if this is wrong

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