What is the purpose of tracking cervical mucus changes during the menstrual cycle?

Correct Answer: C

Rationale: The purpose of tracking cervical mucus changes during the menstrual cycle is to predict ovulation. Cervical mucus consistency changes throughout the cycle, becoming clear and stretchy around ovulation. This method helps determine the most fertile days for conception. Monitoring hormone levels (B) requires blood tests. Identifying signs of infection (A) involves different symptoms. Determining luteal phase length (D) usually requires tracking basal body temperature.

Correct Answer: C

Rationale: The correct answer is C, exposure to high temperatures. Sperm quality can be significantly affected by high temperatures as heat can damage sperm production. Elevated scrotal temperatures can impair sperm production and motility. Frequent exercise (choice A) is generally beneficial for overall health, including reproductive function. The use of mobile phones (choice B) has not been definitively linked to male infertility. Dietary habits (choice D) can influence overall health but are not as directly linked to sperm quality as exposure to high temperatures.

Correct Answer: B

Rationale: The correct answer is B because IVF allows for genetic testing of embryos before transfer, enabling couples to screen for genetic disorders and select healthy embryos. This statement is accurate as genetic testing is a crucial benefit of IVF. The other choices are incorrect because: A is incorrect as IVF success rates vary and are not 100%; C is incorrect as hormonal injections are often necessary in IVF to stimulate egg production; D is incorrect as fertility medications are commonly used to prepare the body for IVF procedures.

Correct Answer: B

Rationale: The correct answer is B because focusing on the fertile window around ovulation maximizes the chances of conception. Ovulation is the most fertile time, so timing intercourse during this period increases the likelihood of pregnancy. Having intercourse daily throughout the menstrual cycle (A) may not be necessary and could lead to fatigue. Avoiding intercourse for a week before ovulation (C) decreases the chances of conception as sperm can survive up to 5 days in the female reproductive tract. Only having intercourse after confirming ovulation (D) may miss the optimal window for conception.

Correct Answer: B

Rationale: The correct answer is B because folic acid is known to prevent neural tube defects like spina bifida in the developing fetus. This is crucial in the early stages of pregnancy when the neural tube is forming. Other choices are incorrect because folic acid does not directly impact egg quality, the risk of multiple pregnancies, or hormone levels during ovulation. Overall, the primary rationale for recommending folic acid before conception is to ensure the proper development of the baby's neural tube.