Why did Ivan Pavlov win the Nobel Prize in Medicine? He won it for his discovery of conditional reflexes. He won it for his inventions of the thermometer and microscope. He won it for creating vaccines against cholera. He won it for his successful experiments in Chemistry.

Задание

Why did Ivan Pavlov win the Nobel Prize in Medicine?

He won it for his discovery of conditional reflexes.
He won it for his inventions of the thermometer and microscope.
He won it for creating vaccines against cholera.
He won it for his successful experiments in Chemistry.