Correct Answer: C

Rationale: The correct answer is C. Malaria is transmitted indirectly through mosquito bites. Choice A is incorrect as syphilis is acquired through direct contact with an infected sexual partner. Choice B is incorrect as measles can be transmitted through respiratory droplets in close contact settings like daycare centers. Choice D is incorrect as nosocomial influenza spreads within healthcare facilities through direct contact or droplets.

Correct Answer: A

Rationale: The correct answer is A: Diabetes. Given the client's Native American ethnicity, high BMI, and vision changes, diabetes is the most crucial condition for the nurse to be aware of in the client's family history. Diabetes is strongly associated with vision problems, especially diabetic retinopathy. Glaucoma (choice B) is a condition that affects the optic nerve and can lead to vision loss but is not as directly linked to the client's BMI and ethnic background. Hypertension (choice C) can also impact vision, but in this case, diabetes takes precedence based on the client's profile. Brain tumor (choice D) is less likely to be related to the client's BMI, ethnicity, and vision changes compared to diabetes.

Correct Answer: A

Rationale: The correct answer is Bayabas (guava) leaves. Guava leaves are known for their anti-diarrheal properties, which can help alleviate Joseph's condition. Pancit pacitan, Sambong, and Lagundi are not commonly used for treating diarrhea and do not possess the same anti-diarrheal properties as guava leaves.

Correct Answer: A

Rationale: The correct answer is A: Cigarette smoking. Cigarette smoking is a significant risk factor for low birth weight. Smoking during pregnancy reduces the amount of oxygen available to the baby, leading to LBW. Choice B, African American ethnicity, while it may be a risk factor, is not as directly linked to LBW as cigarette smoking. Choice C, poor nutritional status, can contribute to LBW but is not as significant as cigarette smoking in this case. Choice D, limited maternal education, is an important social determinant of health but is not as directly related to LBW as cigarette smoking.

Correct Answer: A

Rationale: Corrected Rationale: Epidemiology is the study of the distribution and determinants of health-related states or events in specified populations and the application of this study to the control of health problems. It focuses on identifying and understanding the factors that influence the occurrence and distribution of diseases, defects, disability, or death of groups of individuals. Therefore, the correct answer is A. Choice B, vital health statistics, is not the primary focus of epidemiology. While vital health statistics may be used in epidemiological studies, it is not the direct concern of epidemiology. Choice C, environmental sanitation, although important for public health, is not the main focus of epidemiology. Epidemiology is more concerned with the factors influencing disease occurrence and distribution, rather than environmental sanitation. Choice D, treatment of a communicable disease, is more related to clinical medicine rather than epidemiology. Epidemiology is more focused on prevention, control, and understanding the patterns and causes of diseases rather than their treatment.