Final answer:
The prominent reason for most people residing in Latin American cities is the prevalence of service industry jobs found in urban settings, encouraged by economies of agglomeration and better public infrastructure.
Step-by-step explanation:
The most likely reason most people in Latin America live in cities is B. Most people work in service industries, which are located in urban areas. Urban areas tend to offer more economic opportunities, especially in the service industries, leading to a significant migration from rural to urban regions. The growth of cities is further supported by economies of agglomeration, which refers to the benefits that come when firms and people are close to one another, thus reducing costs and time associated with transportation. Additionally, urban areas typically have better access to public infrastructure such as transportation, utilities, and services that are not as readily available in the newest suburbs or rural areas, often referred to as squatter zones.