in life, there simply isn't one.
Endoscopes can be passed into the large intestine (colon) through the rectum to examine this area of the intestine. This procedure is called sigmoidoscopy or colonoscopy depending on how far up the colon is examined.
We know fatigue can cause drowsiness and so can the other so my best guess is drowsiness
D. The incentive approach and then the drive-reduction approach