Answer:
Go to bed at the same time every evening and wake up at the same time in the morning.
Explanation:
Nails start in the nail root, hidden under the cuticle. When cells at the root of the nail grow, the new nail cells push out the old nail cells. These old cells flatten and harden, thanks to keratin, a protein made by these cells. The newly fromed nail then slides along the nail bed, the flat surface under your nails.
Answer:
I may be wrong but try A.
If a planet exists near a distant star, the star may have a very slight back and forth motion.