There is a general consensus among psychologists that intelligence is a product of complex interaction of ______ and _____.

Heredity and environment

The correct answer is Option (2) → Heredity and environment

There is a general consensus among psychologists that intelligence is a product of complex interaction of heredity (nature) and environment (nurture). Heredity can best be viewed as something that sets a range within which an individual’s development is actually shaped by the support and opportunities of the environment.