Final answer:
Social mobility in the US job market is influenced by factors such as hard work, talent, economic forces, and social programs.
Step-by-step explanation:
Social mobility in the US, particularly in the job market in East Harlem, is impacted by various factors. The American belief in equality and self-effort suggests that hard work and talent determine social mobility. However, economic forces, such as outsourcing and automation, have led to a polarization of the workforce, with most job opportunities being either low-level, low-paying manual jobs or high-level, high-paying jobs based on abstract skills. Additionally, social programs exist to protect people from the worst effects of poverty.