Correct Answer: A

Rationale: Water excess typically leads to hemodilution, resulting in a decreased hematocrit. High serum osmolality and specific gravity would indicate dehydration, while elevated BUN could suggest renal impairment or dehydration, not fluid overload.

Correct Answer: C

Rationale: Eye drops should be placed in the conjunctival sac, which allows the medication to be absorbed properly without causing irritation. Placing drops directly on the sclera or near the lacrimal duct is less effective and can cause discomfort.

Correct Answer: A

Rationale: The correct answer is A: 1 year. By the age of 1 year, a baby's birth weight typically triples. This period allows for significant growth and development in infants. Choices B, C, and D are incorrect because birth weight does not usually triple by 1 month, 2 years, or 6 months of age, respectively.

Correct Answer: C

Rationale: Malformed or low-set ears are often associated with congenital urinary tract anomalies, as both the ears and kidneys develop around the same time during fetal growth. Myelomeningocele, cardiovascular anomalies, and lower extremity defects are less commonly associated with UT anomalies.

Correct Answer: A

Rationale: After rehydration, a regular diet is generally recommended to ensure proper nutrition and recovery. A regular diet includes a balanced intake of all food groups and nutrients. Fruit juices may be too high in simple sugars and lack necessary nutrients, which can exacerbate diarrhea. While a high carbohydrate diet may be beneficial in some cases, a regular diet is more comprehensive. The BRAT diet, consisting of bananas, rice, apples, and toast or tea, was previously recommended for diarrhea, but it lacks adequate protein and fat, so a regular diet is now preferred for overall better nutrition and recovery.