Correct Answer: C

Rationale: By around 10 months, infants often start to say "mama" and "dada" with meaning, associating these words with their parents.

Correct Answer: B

Rationale: Infants typically begin to smile in response to pleasurable stimuli by 2 months, which is an early sign of social interaction and emotional development.

Correct Answer: C

Rationale: The most appropriate approach when performing a physical assessment on a toddler is to use minimum physical contact initially. This helps gain the toddler's cooperation and reduces their distress. Performing traumatic procedures last is crucial as they are likely to upset the child and should be handled with care. Demonstrating the use of equipment may be complex for toddlers to understand, so it is not the most appropriate initial approach. Proceeding systematically in a head-to-toe direction is a good practice but using minimum physical contact initially is more important to establish trust and cooperation with the toddler.

Correct Answer: B

Rationale: In the management of acute sickle cell pain crisis in children, morphine is the preferred medication due to its effectiveness in providing pain relief. Meperidine (Demerol) is less commonly used in this scenario because of its potential for neurotoxicity with repeated doses. Acetaminophen (Tylenol) and Ibuprofen (Motrin) are not typically sufficient for managing the severe pain associated with sickle cell crises and are not the first-line treatment options.

Correct Answer: B

Rationale: Administering antibiotics on schedule is crucial in treating a UTI effectively and preventing complications. Antibiotics help to eliminate the infection-causing bacteria from the urinary tract. While maintaining adequate nutrition and hydration are important aspects of care, the priority in a UTI is to target the infection with antibiotics. Preventing enuresis (bedwetting) is not directly related to the treatment of the infection. Fluid restriction is not recommended in the management of a UTI; in fact, encouraging adequate fluid intake helps flush out bacteria from the urinary tract.