Which of these reform movements was based mostly on health concerns? A. City planning
B. Education
C. Making the city more beautiful
D. Sanitation

D. Sanitation

Explanation:

Sanitizing things can get rid of dangerous bacteria, and it can decrease the likelihood of people getting sick.

None of the other answers deal with health. City planning was meant to increase the amount of housing available, Education was introduced to make the population more educated and informed, and they made cities more beautiful to encourage people to move to the city.

I hope this helps :)

the answer here would be

c. the passage of the fifteenth amendment