Correct Answer: C

Rationale: Chemotherapy drugs are typically administered systemically, meaning they circulate throughout the body via the bloodstream. This allows them to target cancer cells that may have spread beyond the original tumor site, making chemotherapy an effective treatment for cancers that are metastatic (have spread to other parts of the body). However, because chemotherapy is not selective, it can also affect healthy cells that divide rapidly, leading to a range of side effects.

Correct Answer: C

Rationale: The nurse should encourage the patient to consume 2 to 4 liters of fluid daily to reduce the risk of hypercalcemia.

Correct Answer: A

Rationale: If oral anesthetics are used, the patient must be warned to chew with extreme care to avoid inadvertently biting the tongue or buccal mucosa.

Correct Answer: D

Rationale: For premenopausal women, the best time to perform a breast self-examination (BSE) is immediately after their menstrual period ends. This timing is ideal because hormonal fluctuations during the menstrual cycle can cause breast tissue to become swollen and tender, making it more difficult to detect any lumps or changes. After the menstrual period, breast tissue is usually softer and less lumpy, allowing for a more accurate assessment of any abnormalities.

Correct Answer: B

Rationale: In North America, lung cancer is the leading cause of cancer deaths among both men and women, and the primary risk factor for lung cancer is smoking. Therefore, promoting smoking cessation is a critical public health intervention that directly addresses this significant health issue. By helping individuals quit smoking, healthcare providers can significantly reduce the incidence of lung cancer and associated deaths, making this intervention a priority in cancer prevention efforts.