Biosocial theory posits that biological factors alone determine human behavior.

• A. True
• B. False
• C. Cannot be determined
• D. Mostly true

Answer: (B)

The idea being tested is that human behavior results from the interaction of biological and environmental factors, not from biology alone. In biosocial theory, genetic makeup, brain chemistry, and other biological influences set possibilities, but they don’t lock in outcomes by themselves. The social context—family, culture, learning experiences, stress, and available resources—interacts with biology to shape how those possibilities are expressed. For instance, a genetic predisposition toward higher arousal may increase risk for certain behaviors, but whether that actually emerges depends on upbringing, peer influences, norms, and opportunities. Because environment and biology work together rather than biology alone determining behavior, the statement is false. Saying it’s true would ignore environmental influence; saying it cannot be determined or mostly true would misrepresent the theory’s emphasis on interaction.