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.

I think the correct answer is he first option. Among the popular sayings given, the true scientific theory is the statement "Eating lots of carrots will improve your eyesight." This is because many studies and researches had been done and proved that carrots really helps improve or maintain the health of the eyes.

Thermohaline circulation and gyres