The circadian clock is most sensitive to light from about 2 hours before usual bedtime and through the night, until about 1 hour after usual wake-up in the morning (this is the sensitive period). Exposure to light during these times will affect when your body naturally gets sleepy and is ready to fall asleep.
The answer would be A) Fear because its something all of us have and is natural, something that we are afraid of on the inside or outside is instinctual, love is something complex, shame is something complex since as imperfect humans, its in our nature to put the blame on something/someone else so we don't feel shame on ourselves and this is a problem, not B) because even though we have a conscience that's like a guilty reminder that we did/doing something that we're not suppose to, its not instinctual since most people today don't listen to it.
Prescription topical or oral antibiotics
C. Kidney, ureter, bladder
A. A brain chemical linked to addiction
