Correct Answer: D

Rationale: The correct answer is D, Ritualism. Establishing routines like brushing teeth every night after dinner helps toddlers feel secure and in control. Choice A, Negativism, refers to a child's oppositional behavior. Choice B, Diversionary activity, involves redirecting attention to something else. Choice C, Critical play, does not relate to the scenario of establishing a routine for the toddler.

Correct Answer: B

Rationale: The correct answer is Chickenpox (choice B). Chickenpox is highly communicable and requires strict isolation to prevent the spread of the virus through direct contact, droplet transmission, and contaminated objects. Mumps (choice A) is also contagious but does not typically require strict isolation. Exanthema subitum (roseola) (choice C) and Erythema infectiosum (fifth disease) (choice D) are not as highly contagious as chickenpox and do not necessitate strict isolation.

Correct Answer: C

Rationale: Persistence in feeding, introducing new foods slowly, and maintaining a calm temperament are key strategies in managing FTT. A stimulating atmosphere may overwhelm the child and should be minimized during feeding times.

Correct Answer: A

Rationale: The correct answer is A. The use of placebos without the patient's consent is unethical and goes against the principles of beneficence and autonomy. Choice B is incorrect because using placebos does not provide reliable information about the presence or severity of the pain; it only indicates the response to the placebo itself. Choice C is wrong as the absence of a response to a placebo does not definitively mean that the child's pain has an organic basis; there could be various reasons for the lack of response. Choice D is also incorrect as individuals may have a positive response to a placebo even if their pain has a significant organic cause. Therefore, the most appropriate response is A, emphasizing the ethical concerns surrounding the use of placebos without informed consent.

Correct Answer: B

Rationale: The ventrogluteal site is free of significant nerves and vascular structures, making it a safer choice for intramuscular injections in young children compared to other sites that may be more prone to complications.