Correct Answer: C

Rationale: The correct answer is C: Consume foods fortified with folic acid. Folic acid plays a crucial role in preventing neural tube defects. It is advised to consume foods fortified with folic acid or take a supplement containing at least 400 micrograms of folic acid daily. This nutrient is essential for the developing fetus and can significantly reduce the risk of neural tube defects when taken before and during early pregnancy. Choices A, B, and D are incorrect. While limiting alcohol consumption is important during pregnancy, it is not directly related to reducing the risk of neural tube defects. Increasing intake of iron-rich foods is essential for preventing anemia but is not specifically linked to neural tube defects. Avoiding foods containing aspartame is generally recommended, but it is not directly related to reducing the risk of neural tube defects.

Correct Answer: D

Rationale: Variable decelerations can indicate umbilical cord compression, which is a concern that may arise due to the umbilical cord being compressed during labor. This compression can lead to reduced blood flow and oxygen delivery to the fetus, necessitating close monitoring and potentially interventions to alleviate the pressure on the cord. Early decelerations are typically benign and mirror the contractions, indicating fetal head compression. Accelerations are reassuring patterns that show a healthy response to fetal movement. Late decelerations are concerning as they suggest uteroplacental insufficiency, indicating potential oxygen deprivation to the fetus.

Correct Answer: D

Rationale: The correct sequence of maternal changes during pregnancy is as follows: Amenorrhea (absence of menstrual periods), Goodell's sign (softening of the cervix), Quickening (first fetal movements felt by the mother), and Lightening (baby descending into the pelvis). These changes occur at different stages of pregnancy and are important indicators of fetal development and maternal adaptation. Choice A is correct as it is the initial change indicating possible pregnancy. Choices B, C, and D follow in the correct order of occurrence during pregnancy. Choices B, C, and D are incorrect as they do not follow the correct sequence of maternal changes.

Correct Answer: D

Rationale: In the postpartum period, the presence of lochia rubra and small clots along with a firm, midline fundus at the umbilicus is considered normal. In this situation, the appropriate action is to document the findings and continue to monitor the client. Changes in the amount and character of lochia, deviation of the fundus from the midline, or fundal height above or below the expected level may indicate a need for further intervention. Encouraging bladder emptying is important but not the priority in this scenario. Notify the healthcare provider if there are signs of abnormal postpartum bleeding or fundal abnormalities. Therefore, choice D is the correct answer. Choices A, B, and C are incorrect because at this stage, there are no signs of abnormality that require immediate notification of the healthcare provider, increased frequency of fundal massage, or immediate bladder emptying.

Correct Answer: B

Rationale: The correct answer is B because implantation typically occurs between 6 to 10 days after conception, not 2 to 3 days. It is crucial for the nurse to intervene and provide accurate information to ensure the client receives correct education about conception. Choice A is correct as fertilization does occur in the outer third of the fallopian tube. Choice C is also accurate as sperm can remain viable in the woman's reproductive tract for 2 to 3 days. Choice D is correct as bleeding or spotting can indeed accompany implantation.