Please help me it’s for tomorrow

In this following picture it shows how it was like back then when white and black wasn't treated equal. A you can see the better water fountain is the one only white people can use. The one the black people use isn't as good as the white colored water fountain. The water fountain the white colored people can use has a better things like you can fill up a water bottle. The black one looks like it is a tall toilet for the ones the white people use. Throughout the paragraph there are some differences that the two water fountains have.

Explanation:

your answer is c) experiments with water vapor showed that elements combine in specific proportions.

yes tht is good is it a promisis