Correct Answer: D

Rationale: Papillary thyroid carcinoma is the most common type of thyroid cancer and is known for presenting as a painless unilateral enlargement of the thyroid gland. Fine-needle aspiration cytology typically reveals classic features such as numerous microfollicles and psammoma bodies. Thyroglossal duct cyst, Hashimoto's thyroiditis, and thyroid adenoma would not typically present with these cytological features or with painless thyroid enlargement as seen in papillary thyroid carcinoma.

Correct Answer: A

Rationale: At the concrete operational stage according to Piaget's theory, children typically demonstrate logical thinking abilities and are able to understand and work with concrete objects and events. They can also grasp concepts such as conservation and classification. These children are able to think logically about concrete events but may still struggle with abstract and hypothetical situations. Therefore, Belle, functioning at the concrete operational stage, would exhibit behaviors such as thinking logically and being able to see possibilities, as described in option A.

Correct Answer: A

Rationale: Crisis intervention is an important part of secondary prevention in the care of families. Secondary prevention involves activities that aim to reduce the impact of a crisis or event that has already occurred. Crisis intervention provides immediate support and strategies to help families cope with and overcome a crisis situation. By addressing the crisis quickly and effectively, secondary prevention can help prevent further negative outcomes and promote the well-being of the family members.

Correct Answer: B

Rationale: It is important for the nurse to have a direct and easily accessible means of communication with the patient who is expected to be in and out of the hospital due to their chronic illness like leukemia. By asking for the patient's phone number, the nurse can quickly reach out to them for updates, clarification, or any urgent matters that may arise. This direct communication line helps in ensuring continuity of care and addressing the patient's needs promptly. This approach is more practical and efficient compared to options such as asking the patient to call the hospital number listed in the yellow pages or relying on chart information which may not always be up to date. Writing down the number and giving it to the ward clerk may cause unnecessary delays in communication.

Correct Answer: C

Rationale: A dental abscess is characterized by a localized collection of pus that results from a bacterial infection of the tooth pulp, leading to swelling, pain, and inflammation. The infection typically occurs when bacteria enter the tooth through a cavity, crack, or other dental injury. The abscess can cause significant pain and discomfort and must be treated promptly by a dentist to prevent further complications. Dental caries refer to tooth decay or cavities that result from the breakdown of tooth structure by acids produced by bacteria. Periodontitis is a severe gum infection that damages the soft tissue and destroys the bone that supports the teeth. Oral candidiasis is a fungal infection that affects the mouth and throat.