Correct Answer: C

Rationale: The correct answer is C: "Divided doses produce greater cytotoxic effects on the diseased cells." Dividing the doses of the antimetabolite allows for more consistent levels of the drug in the bloodstream, ensuring sustained exposure to the cancer cells. This continuous exposure enhances the drug's cytotoxic effects, increasing its efficacy in targeting and destroying the diseased cells. Options A and B provide vague or incorrect information, while option D is misleading as antimetabolites do not prevent cell division, but rather disrupt DNA synthesis.

Correct Answer: D

Rationale: The correct answer is D: Stapedectomy. This procedure is used to correct otosclerosis by removing the stapes bone and replacing it with a prosthetic device. This restores normal hearing by allowing sound waves to travel through the ear properly. Myringotomy (A) is a procedure to drain fluid from the middle ear, not to correct otosclerosis. Mastoidectomy (B) is the removal of infected mastoid air cells, not related to otosclerosis. Myringoplasty (C) is a surgical procedure to repair a perforated eardrum, not used for otosclerosis. Stapedectomy is the most appropriate choice for correcting otosclerosis as it directly addresses the abnormal bone growth in the middle ear.

Correct Answer: D

Rationale: The correct answer is D: give the guest a glass of orange juice. This is the best action because the guest is likely experiencing hypoglycemia due to being diabetic. Orange juice contains fast-acting sugar that can quickly raise blood sugar levels. Encouraging the guest to eat some (choice A) may take longer to have an effect. Calling the guest's personal hygiene (choice B) is irrelevant to the situation. Offering the guest a peppermint (choice C) will not effectively raise blood sugar levels.

Correct Answer: B

Rationale: The correct answer is B: Quadriceps setting. After surgery, quadriceps setting exercises are crucial for preventing muscle atrophy and maintaining joint mobility. Bladder control (A) is important but typically not the major early problem. Client education (C) and use of aids for ambulation (D) are important aspects of care but not the primary concern immediately post-surgery. Quadriceps setting helps prevent complications and promote early mobility.

Correct Answer: C

Rationale: The correct answer is C: 12 to 18 g/100mL. Normal hemoglobin values typically range from 12 to 18 g/100mL in adults. This range reflects the normal concentration of hemoglobin in the blood and is commonly used as a reference range in clinical practice. Choices A, B, and D are incorrect because they do not fall within the typical normal range for hemoglobin levels. Choice A (38% to 48%) is a percentage range, not a direct measurement of hemoglobin concentration. Choice B (48 to 54 mg%) and Choice D (27 to 36 g/dL) are outside the normal range for hemoglobin levels in adults. Therefore, the most appropriate and accurate choice among the options provided is C (12 to 18 g/100mL) based on standard reference values for hemoglobin concentration in the blood.