Final answer:
The level of intelligence is influenced by a combination of genetic, environmental, social, and emotional factors.
Step-by-step explanation:
The level of intelligence in an individual is influenced by a combination of genetic, environmental, social, and emotional factors. While genetics play a role in determining intelligence, it is not the sole factor. Environmental factors, such as access to education and resources, can also contribute to intelligence. Social factors, including socioeconomic status, can affect cognitive development, and emotional factors such as stress can impact brain functioning and IQ scores.