Final answer:
Alvin Ailey believed in a society where equality was paramount, aligning with the principles of a meritocracy, which promotes social mobility based on individual merit rather than birthright or class.
Step-by-step explanation:
Alvin Ailey was an advocate for promoting equality and believed in eliminating social hierarchies. He held a vision for a society where social equality was paramount.
When considering which systems allow for the most social mobility, a meritocracy is the structure that facilitates this the most. In a meritocracy, advancement is based on individual talents and efforts rather than on the privileges of birth or class. This idea challenges traditional social hierarchies and is more aligned with Ailey's beliefs.
Meritocracy contrasts with a caste system, which is based on birth circumstances and offers no mobility, or with inherited status as in a monarchy. While class systems do allow for some degree of mobility, they still maintain significant social barriers. Hence, among the given options, meritocracy stands out as the system that best supports social mobility.