Correct Answer: C

Rationale: The correct answer is C: Pincer grasp. The pincer grasp is the ability to hold objects between the thumb and another finger, typically developed around 9-12 months. At 5 months, it is early for a pincer grasp to fully develop, but the beginning of this skill can be seen as early as 5 months. Choices A and B are incorrect as the parachute reflex is a protective response to falling and the grasp reflex is an automatic response to touch. Choice D, prehension, is a general term for the act of grasping or holding objects, but it does not specifically refer to holding objects between the thumb and fingers like the pincer grasp does.

Correct Answer: B

Rationale: Skin turgor is a quick and simple way to assess hydration status. Poor skin turgor can indicate dehydration.

Correct Answer: D

Rationale: Oral sucrose and nonnutritive sucking are effective nonpharmacologic interventions for reducing procedural pain in neonates.

Correct Answer: D

Rationale: Preschool children may exhibit regressive behavior, fear abandonment, and blame themselves for their parents' divorce due to their limited understanding of the situation.

Correct Answer: B

Rationale: The correct answer is B. Understanding time concepts like 'half past' can be challenging for a 7-year-old, indicating the level of language development. Choice A is incorrect as fascination with bathroom language is common in this age group but not necessarily indicative of language development. Choice C is incorrect as a 7-year-old typically cannot carry on an adult conversation due to cognitive and experiential limitations. Choice D is incorrect as by the age of 7, children should be able to speak in full sentences.