Which of the following popular sayings is an example of a true scientific theory?
eating lots of carrots will improve your eyesight.
it is safe to eat dropped food if you adhere to the 5-second rule.
drinking warm milk makes you sleepy.
touching toads gives you warts.

1st or 2nd options

Explanation:

Yes, carrots will help improve eyesight. The body uses beta-carotene to make vitamin A, and “vitamin A is really important, there's no question about that,” says Emily Chew, deputy clinical director at the National Eye Institute.

Warm milk because milk has small amounts of tryptophan, the raw material the brain uses to build both serotonin and melatonin. These are compounds that help us relax and prepare for sleep.

Hope this helps :D

dynamic equilibrium is the answer.