Correct Answer: B

Rationale: By the age of eleven, many children are capable of administering their own insulin injections with supervision, fostering independence and better management of their diabetes. This age is appropriate for the child to take on more responsibility for their care. While parental involvement is still crucial for supervision and guidance, the child can start to learn and perform the injections themselves. Choice A is incorrect because parental involvement is important for safety and proper technique. Choice C is incorrect as waiting until closer to adolescence may delay the child's ability to manage their diabetes effectively. Choice D is incorrect as reaching injection sites is not the sole criteria; proper technique and supervision are essential.

Correct Answer: D

Rationale: Using simple diagrams helps school-age children understand what to expect in a procedure, catering to their developmental level and reducing anxiety. Informing toddlers too early can increase anxiety, and parents' presence is generally comforting, not discouraging.

Correct Answer: B

Rationale: Showing the child the equipment before the procedure helps build trust and reduces fear. Using an 18-gauge needle is too large for a child, and multiple attempts can increase trauma. Restraining completely can increase fear and anxiety.

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: A

Rationale: Hydrocarbon poisons include substances like gasoline, turpentine, and lighter fluid, which are typically liquids derived from petroleum. Bleach is a corrosive substance, not a hydrocarbon.