Correct Answer: A

Rationale: The correct answer is A. A child with chickenpox should not go to the playroom due to being contagious, as the virus can easily spread to other children. Children with fractures (choice B), new-onset diabetes mellitus (choice C), or postoperative appendectomy (choice D) do not pose a risk of spreading an infectious disease, so they can safely go to the playroom.

Correct Answer: B

Rationale: Thawing or heating breast milk in a microwave is not recommended because it can create hot spots that may burn the infant and destroy essential nutrients.

Correct Answer: B

Rationale: Comforting and cuddling a 2-month-old baby when they cry helps build trust and security. At this age, responding to cries does not lead to spoiling, but rather supports healthy emotional development.

Correct Answer: D

Rationale: An open cup is recommended for feeding after cleft palate repair to prevent injury to the surgical site and avoid creating negative pressure, which could disrupt the repair.

Correct Answer: A

Rationale: Encouraging the parent to express their feelings is crucial in providing support and addressing the emotional challenges that colic can present. Reassuring the parent about the temporary nature of colic can also be helpful.