Correct Answer: A

Rationale: The correct statement to include when developing an educational program for adolescents about nutrition during the third trimester of pregnancy is to consume three to four servings of dairy each day. Adequate calcium intake is crucial for bone development during pregnancy and helps prevent complications related to inadequate calcium intake. Increasing daily caloric intake by 600 to 700 calories (Choice B) is not necessary during the third trimester; excessive caloric intake can lead to unnecessary weight gain. Limiting daily sodium intake to less than 1 gram (Choice C) is not suitable during pregnancy, as some sodium intake is necessary for maintaining fluid balance. Increasing protein intake to 40 to 50 grams per day (Choice D) is important during pregnancy, but the emphasis in this case should be on calcium from dairy sources for bone development.

Correct Answer: B

Rationale: During pregnancy, weight gain is expected. The client's understanding is demonstrated by acknowledging the need for alternative sexual positions due to the physiological changes, such as weight gain and a growing abdomen. This statement reflects comprehension of the teaching provided by the healthcare provider.

Correct Answer: B

Rationale: In cases where the fetus is in a posterior position causing severe pressure and pain in the lower back during labor, applying counter-pressure is the most effective nonpharmacological intervention. Counter-pressure helps lift the fetal head off the spinal nerve, offering relief to the client. This technique is evidence-based and recommended to alleviate discomfort associated with a posterior fetal position. Choices A, C, and D are not as effective in this situation. While a back rub or playing music may provide some comfort, they do not directly address the issue caused by the fetal head's position. Similarly, a foot massage may offer relaxation but may not significantly relieve the specific discomfort arising from the posterior fetal position and the associated lower back pain.

Correct Answer: A

Rationale: The correct statement to include when developing an educational program for adolescents about nutrition during the third trimester of pregnancy is to consume three to four servings of dairy each day. Adequate calcium intake is crucial for bone development during pregnancy and helps prevent complications related to inadequate calcium intake. Increasing daily caloric intake by 600 to 700 calories (Choice B) is not necessary during the third trimester; excessive caloric intake can lead to unnecessary weight gain. Limiting daily sodium intake to less than 1 gram (Choice C) is not suitable during pregnancy, as some sodium intake is necessary for maintaining fluid balance. Increasing protein intake to 40 to 50 grams per day (Choice D) is important during pregnancy, but the emphasis in this case should be on calcium from dairy sources for bone development.

Correct Answer: A

Rationale: Levonorgestrel is an emergency contraceptive that works by inhibiting ovulation to prevent conception. It is most effective when taken as soon as possible within 72 hours following unprotected sexual intercourse. Therefore, the nurse should instruct the adolescent to take the medication promptly to maximize its effectiveness. Choice B is incorrect because levonorgestrel can be used even if the individual is on oral contraceptives. Choice C is incorrect as the efficacy of levonorgestrel is not determined by the onset of menstruation. Choice D is incorrect because levonorgestrel is a single-dose emergency contraceptive and does not provide protection for 14 days after ingestion.