Final answer:
Mexico City's upper class is marked by significant wealth and power, often living in luxury with access to exclusive services and influencing society and government.
Step-by-step explanation:
Those who belong to Mexico City's upper class are typically characterized by significant wealth and power, often stemming from European descent. This small but influential group has access to a lifestyle that includes residing in exclusive neighborhoods, working in high-status professions, and partaking in leisure activities at private places such as country clubs and gated communities. The lifestyle associated with the upper class includes a higher quality of education, healthcare, and the ability to travel and pursue a range of interests. This affluence also allows them to influence various aspects of societal and governmental sectors, maintaining their position at the top of the socioeconomic hierarchy.