Correct Answer: A

Rationale: The vaginal lining is primarily formed by squamous epithelium. Squamous epithelium is the correct answer because it is the type of epithelium that lines the vaginal canal. Stratified epithelium consists of multiple layers and is not the primary type found in the vaginal lining. Vascular connective tissue and muscle coat are not the main components of the vaginal lining, making them incorrect choices.

Correct Answer: A

Rationale: The correct answer is A: Women and adolescent girls. Maternal nutrition programs typically target women of reproductive age and adolescent girls to improve their health outcomes. Option B is incorrect because maternal nutrition initiatives extend beyond just pregnant women. Option C is incorrect because the focus is not on all children under five but specifically on women and adolescent girls. Option D is incorrect because the program does not target all adolescents, but rather women and adolescent girls.

Correct Answer: D

Rationale: The correct answer is D, 'Reproductive health.' Reproductive health programs focus on ensuring overall well-being in relation to reproduction, including access to reproductive services, education, and healthcare. Choice A, 'Family organization,' does not specifically address health aspects related to reproduction. Choice B, 'Family planning,' is more focused on birth control and family size rather than the broader aspects of reproductive health. Choice C, 'Reproductive care,' is limited to the aspect of medical care and does not encompass the comprehensive approach of reproductive health programs.

Correct Answer: A

Rationale: The correct answer is A: 'Stimulates milk ejection.' Oxytocin is responsible for contracting the muscles around the milk ducts, pushing milk into the nipples for breastfeeding. This process is known as milk ejection or let-down. The other choices are incorrect because oxytocin's primary function is to facilitate milk ejection rather than directly stimulating the production of milk, the development of lactoferrin, or the secretion of relaxin.

Correct Answer: B

Rationale: The correct answer is B: Perineum. The perineum is the triangular space located between the vaginal and rectal canals. It is a region containing various muscles, nerves, and blood vessels that support the pelvic floor. Choice A, Pelvic floor, refers to the structure supporting the organs in the pelvic cavity, not the space between the vaginal and rectal canals. Choice C, Vestibule, is the space within the labia minora containing the openings of the urethra and vagina, not the area between the vaginal and rectal canals. Choice D, Perineal body, is a fibromuscular mass in the perineum area but not the space between the vaginal and rectal canals.