People have moved to mexico city, since the 1940’s, because it provided all of the following, except
a. jobs.
c. health services.
b. schools.
d. security.

D. SECURITY

People have moved to Mexico City, since the 1940's, because it provided jobs, health services, and schools to the people EXCEPT security.

From 1920 to 1940, the Mexican political system was established. The system had an authoritarian state basis of government. This is where the state is controlled by hemogenic "revolutionary" party headed by the president.

Hemogeny is a type of indirect imperial dominance wherein the hegemon, in this case the president, rules the subordinate states using the threat of intervention as an implied means of power. 

Acase involving the laws of a single state.