Which factor is the best predictor of succeeding at work?

A) socioeconomic status (SES)
B) intelligence (IQ)
C) personality
D) birth order

Socioeconomic Status (SES)

An individual's or family's economic and social position in relation to others, based on income, education, and occupation.

Intelligence (IQ)

Measures cognitive abilities, such as problem-solving, reasoning, and the ability to learn, often quantified as an Intelligence Quotient.