Correct Answer: C

Rationale: Masturbation in preschool children is a normal behavior as they explore their bodies. It is best viewed as a natural part of development. Parents are often advised to ignore it and provide distractions rather than making the child feel ashamed or embarrassed. Choice A is incorrect because it is a natural behavior and not considered abnormal in this context. Choice B is incorrect as it does not necessarily disrupt the family. Choice D is incorrect as the focus should be on the child's development and well-being, not on the parents' feelings of embarrassment.

Correct Answer: A

Rationale: Teratogens are substances that can cause congenital abnormalities, especially during the first trimester when organogenesis occurs. Choice A, Teratogens, is the correct answer as it specifically refers to substances that cause physical defects in the developing embryo. Choices B, Heterozygous, C, Inborn errors, and D, Multifactorial, are incorrect as they do not directly relate to substances that cause physical defects in embryos during organogenesis.

Correct Answer: C

Rationale: Demonstrating on a doll helps the toddler understand what will happen in a non-threatening way, making the procedure less intimidating. Long teaching sessions or avoiding choices can increase anxiety.

Correct Answer: C

Rationale: Providing 8 oz of juice daily is excessive for an 8-month-old infant and can displace other nutrient-rich foods or formulas that are necessary for growth, especially in an infant with FTT.

Correct Answer: B

Rationale: Hypotonic dehydration occurs when the loss of electrolytes exceeds the loss of water, leading to a decrease in plasma osmolarity. This often occurs when sodium loss is greater than water loss, as in diarrhea or vomiting.