Correct Answer: B

Rationale: The correct answer is B, Monozygotic twin. A monozygotic twin, also known as an identical twin, is the result when a single zygote splits into two parts, leading to the development of two genetically identical individuals. Choices A, C, and D are incorrect because they do not accurately describe the scenario where a single zygote splits into two parts to form identical twins. Dizygotic twin (Choice A) refers to fraternal twins, which result from two separate eggs fertilized by two different sperm cells. Fraternal twin (Choice C) is another term for dizygotic twins, arising from two separate zygotes. Nonidentical twin (Choice D) is a synonymous term for dizygotic or fraternal twins, indicating that they are not genetically identical.

Correct Answer: D

Rationale: Dr. Rice's views align with William James, a functionalist, who emphasized understanding the role emotions play in survival and adaptation. William James and other functionalists believed that emotions have a purpose in helping individuals adapt to their environment. Edward Titchener, known for structuralism, focused on the structure of the mind rather than the purpose of emotions. Ivan Pavlov was a behaviorist known for his work on classical conditioning, which is not directly related to the purpose of emotions. Carl Rogers was a humanistic psychologist who emphasized self-actualization and personal growth, not specifically the purpose of emotions in survival and adaptation.

Correct Answer: D

Rationale: The correct order of the three stages of prenatal development is germinal stage, embryonic stage, and fetal stage. During the germinal stage, the fertilized egg rapidly divides and implants in the uterine wall. The embryonic stage follows, where major organs and systems begin to develop. Finally, during the fetal stage, the developing organism is known as a fetus and continues to grow and mature. Choice A is incorrect because it has the stages in the wrong order. Choice B is incorrect as it also presents the stages out of order. Choice C is incorrect as it reverses the order of the stages. Therefore, the correct answer is D.

Correct Answer: A

Rationale: The correct answer is John Watson. Watson, a key figure in behaviorism, believed that psychology should focus on observable behavior rather than consciousness. Abraham Maslow is known for his hierarchy of needs theory and humanistic psychology, not for advocating the study of behavior over consciousness. G. Stanley Hall was a pioneer in psychology but did not propose replacing the study of consciousness with behavior. Sigmund Freud, a prominent figure in psychoanalysis, focused on the unconscious mind rather than behavior.

Correct Answer: B

Rationale: Wilhelm Wundt's approach emphasized the study of conscious experience, marking a shift towards scientific methods in psychology. Choice A, observable behavior, is associated with behaviorism and not Wundt's structuralism. Choice C, unconscious motivation, is more aligned with Freud's psychoanalytic theory. Choice D, the functions of behavior, relates more to functionalism, which was developed by William James.