The red guards carried out the cultural revolution by persecuting intellectuals and government officials
I think it's the second one
The Public Relations Society of America (PRSA) is an organization that was formed in 1947, headquartered in New York and remained as the largest professional organization serving the field. The formation of this organization was brought by the Postwar Era.
I'm gonna go with A & B " It provided a way for people to move west more easily." and "It created a mode for the transport of goods and services to the west." C is also somewhat applicable but I'm not 100% sure about C. Hope this helps.
