Correct Answer: C

Rationale: The correct answer is C: 'ego integrity.' Erikson's concept of ego integrity involves reflecting on life with a sense of satisfaction, which requires continuity in personal history. This sense of integrity is developed in late adulthood and is characterized by a feeling of wholeness and fulfillment. Choices A, B, and D are incorrect. Intimacy (choice A) relates to forming close relationships, ego identity (choice B) pertains to a stable sense of self, and initiative (choice D) is about being proactive and exploring the environment, which are not directly associated with preserving personal history for a sense of satisfaction in later life.

Correct Answer: C

Rationale: In females, the twenty-third pair of chromosomes is indeed labeled as XX. This pair of chromosomes determines the biological sex of females. Choice A, 'an autosome,' is incorrect as autosomes refer to the non-sex chromosomes. Choice B, 'dizygotic,' is incorrect as it relates to twins. Choice D, 'XY,' is incorrect as it represents the chromosome pair found in males.

Correct Answer: C

Rationale: Erikson's theory of psychosocial development highlights generativity as the central focus of middle adulthood. Generativity involves being productive, caring for others, and contributing to society. This stage is characterized by a desire to leave a lasting impact on future generations. Choices A, B, and D are incorrect. Initiative is associated with the preschool years, autonomy with early childhood, and industry with middle childhood according to Erikson's stages of development.

Correct Answer: C

Rationale: The correct answer is C: concrete operational. During the concrete operational stage, children start to engage in logical thinking about concrete events. This stage typically occurs between the ages of 7 to 11 years. Choices A, B, and D are incorrect. The sensorimotor stage (choice A) is the first stage in Piaget's theory, occurring from birth to about 2 years old. The preoperational stage (choice B) follows the sensorimotor stage and occurs roughly from ages 2 to 7 years. The formal operational stage (choice D) is the final stage in Piaget's theory, where abstract thinking and hypothetical reasoning develop, usually beginning around age 11.

Correct Answer: A

Rationale: Correct answer: Developmental science is interdisciplinary because it integrates knowledge from multiple fields like psychology, biology, and sociology. The term 'empirical' refers to information gained from observation or experimentation, which is not the focus of this question. 'Applied' and 'theoretical' do not capture the essence of developmental science requiring inputs from various disciplines.