Correct Answer: A

Rationale: Rationale: 1. Insulin needs change during pregnancy due to hormonal changes. 2. During the first trimester, insulin needs may decrease. 3. During the second and third trimesters, insulin needs increase. 4. Postpartum, insulin needs return to pre-pregnancy levels. Therefore, choice A is correct as insulin needs vary based on gestational stage. Choices B, C, and D are incorrect because insulin needs do not uniformly increase or decrease throughout pregnancy or due to fetal insulin production.

Correct Answer: D

Rationale: The correct answer is D, performance of pelvic muscle exercises. Pelvic muscle exercises, also known as Kegel exercises, help strengthen the pelvic floor muscles which support the bladder, uterus, and bowel. By strengthening these muscles, the risk of developing cystocele, rectocele, and uterine prolapse postpartum is reduced. It is a proactive approach to prevent these conditions. Choice A, maintenance of good perineal hygiene, is important for preventing infections but does not specifically address the risk of pelvic organ prolapse. Choice B, prevention of constipation, is also important but does not directly target the muscle weakness that contributes to prolapse. Choice C, increased fluid intake for 2 weeks postpartum, is not as effective in preventing prolapse as pelvic muscle exercises. In summary, pelvic muscle exercises are the most appropriate recommendation as they directly address strengthening the muscles that support the pelvic organs, reducing the risk of prolapse postpartum.

Correct Answer: B

Rationale: The correct answer is B: Asian Americans. Asian Americans have a higher incidence of liver cancer compared to other population groups due to factors such as chronic hepatitis B infection and dietary aflatoxin exposure. Monitoring this group closely is essential for early detection and intervention. Incorrect choices: A: Hispanic - While Hispanics have a higher prevalence of fatty liver disease, the highest risk of liver cancer is not among this group. C: Non-Hispanic Caucasians - Caucasians have a lower incidence of liver cancer compared to Asian Americans. D: Non-Hispanic African-Americans - African-Americans have a lower risk of liver cancer compared to Asian Americans due to differences in risk factors and prevalence of hepatitis B.

Correct Answer: D

Rationale: Correct Answer: D Rationale: 1. Clear, watery fluid draining from the ear post-accident indicates a possible cerebrospinal fluid (CSF) leak, a serious condition requiring immediate medical attention to prevent complications such as meningitis. 2. CSF leak can result from a basilar skull fracture, common in head injuries like motorcycle accidents. 3. Prompt reporting of this finding by the nurse is crucial for timely intervention and prevention of potential life-threatening complications. Summary: A: Visualizing the malleus during otoscopic examination is normal and not an immediate concern in this scenario. B: A pearly gray tympanic membrane is a normal finding and does not indicate a serious issue post-accident. C: Tenderness in the mastoid area may suggest injury but is not as urgent as clear, watery fluid drainage indicative of a CSF leak.

Correct Answer: C

Rationale: The correct answer is C because primary brain tumors originate from cells within the brain itself. These tumors develop from abnormal growth of brain cells. Choice A is incorrect as primary brain tumors do not come from outside the central nervous system (CNS). Choice B is incorrect as primary brain tumors do not typically start in glands. Choice D is incorrect as primary brain tumors do not arise from nerve tissue elsewhere in the body. In summary, the nurse should explain to the patient that the tumor originated from cells within his brain to provide accurate information about the nature of primary brain tumors.