Correct Answer: C

Rationale: The correct answer is C because the nurse should use the Snellen chart positioned 6.1 m (20 ft) away to assess visual acuity. This is the standard method for testing distance vision. The nurse should ask the patient to read the letters on the chart from the top row down, covering one eye at a time if necessary. This method provides an accurate measurement of visual acuity at a distance. A: Performing the confrontation test assesses visual fields, not visual acuity. B: Using a Jaeger card is for near vision testing, not distance visual acuity. D: Assessing the ability to read newsprint at a close distance does not provide an accurate measurement of visual acuity at a distance.

Correct Answer: B

Rationale: The correct answer is B: supraclavicular area. Enlarged submental lymph nodes can indicate a systemic issue. Assessing the supraclavicular area is important as it contains Virchow's node, which may indicate malignancy or metastasis. Choices A, C, and D are incorrect as they do not specifically target the area most likely to reveal significant findings related to the enlarged submental lymph nodes.

Correct Answer: B

Rationale: The correct answer is B (XI; asking the patient to shrug her shoulders against resistance). This is the correct choice because the nurse suspects damage to the spinal accessory nerve (CN XI), which innervates the trapezius and sternocleidomastoid muscles. Asking the patient to shrug her shoulders against resistance tests the function of the trapezius muscle, which is innervated by CN XI. This examination helps to assess the integrity of the nerve and its ability to innervate the muscle. Palpating the anterior and posterior triangles (choice A) is not specific to CN XI function. Percussing the sternomastoid and submandibular neck muscles (choice C) is related to CN XII, not CN XI. Assessing for a positive Romberg's sign (choice D) is not relevant to testing the function of CN XI.

Correct Answer: A

Rationale: The correct answer is A because vision is not fully developed until around 2 years of age. Newborns have limited visual capabilities and their visual acuity improves over time. Choices B, C, and D are incorrect because infants do not develop the ability to focus on an object at 8 months (B), develop coordinated eye movements by 3 months (C), or have uncoordinated eye movements in the first year of life (D). These statements do not accurately reflect the timeline of visual development in infants.

Correct Answer: D

Rationale: The correct answer is D. The "soft spot" on a baby's head, also known as the fontanelle, is a normal anatomical feature that allows for the growth and development of the baby's brain during the first year of life. It is a gap between the bones of the skull that eventually closes as the baby grows. Response A is incorrect because the fontanelle is not related to maternal dietary intake during pregnancy. Response B is incorrect as craniosynostosis is a condition where the sutures of the skull close prematurely, leading to abnormal head shape. Response C is incorrect as cretinism and congenital hypothyroidism are not typically associated with the fontanelle. Overall, the correct response, D, provides an accurate explanation of the normal function of the fontanelle in a newborn's development.