Correct Answer: B

Rationale: Dental caries, commonly known as tooth decay, is characterized by the irreversible demineralization of the enamel and dentin due to acids produced by bacterial activity. This process leads to cavitation and destruction of the tooth structure, ultimately resulting in the formation of a cavity. Gingivitis is inflammation of the gums, periodontitis is inflammation and infection of the supporting structures of the teeth (gums, bone, and ligaments), and a dental abscess is a collection of pus in the tissues surrounding the tooth, none of which are specifically related to the irreversible demineralization of enamel and dentin seen in dental caries.

Correct Answer: B

Rationale: In the universal health law, the government agencies that are considered as "key players" in its implementation are the Department of Health (DOH), Local Government Units (LGUs), and the Philippine Health Insurance Corporation (PhilHealth).

Correct Answer: B

Rationale: In assessing the health condition of school children, anemia and other blood disorders are more commonly observed in this age group compared to cancer, lice, parasites, fractures, and injuries. Anemia is a common health issue among children due to various factors such as poor nutrition, iron deficiency, and infections. Regular screening for anemia is important in school-age children to prevent long-term complications and to promote their overall health and well-being. While cancer, lice, parasites, fractures, and injuries can also occur in school children, anemia and blood disorders are more prevalent in this age group.

Correct Answer: C

Rationale: When a patient is at risk of falls due to an impaired gait, a physical therapist would be the most appropriate member of the multidisciplinary team for the nurse to collaborate with. Physical therapists specialize in improving mobility, balance, and coordination through exercises, gait training, and other interventions. They can assess the patient's gait pattern, strength, and balance, and develop a personalized plan to address the impairments contributing to the fall risk. By working closely with a physical therapist, the nurse can help the patient improve their gait and reduce the risk of falls, ultimately promoting safety and independence.

Correct Answer: C

Rationale: Bone pain in the back of the ribs is a classic manifestation of multiple myeloma. Multiple myeloma is a type of cancer that primarily affects plasma cells in the bone marrow, leading to weakened bones and bone pain. Patients with multiple myeloma often experience bone pain in areas such as the ribs, spine, and pelvis. The bone pain is typically persistent and worsens with movement or pressure. Additionally, other common symptoms of multiple myeloma include anemia, kidney damage, recurrent infections, and elevated calcium levels in the blood.