Final answer:
The correct answer is functionalism. It is a branch of psychology that focuses on understanding how mental activities help organisms adapt to their environment.
Step-by-step explanation:
The correct answer is d) Functionalism.
Functionalism is a branch of psychology that focuses on understanding how mental activities help organisms adapt to their environment. It emphasizes studying the function of behavior in the world rather than the individual parts of the mind.
For example, functionalism would study how mental processes such as memory, attention, and problem-solving contribute to an individual's ability to navigate and function effectively in their environment.