Which of the following statements can motivate a couple to practice family planning?
Correct Answer: D
Rationale: The correct answer is D because all the listed statements provide valid reasons to motivate couples to practice family planning. Option A highlights how family planning can lead to an improvement in the standard of living by allowing families to better manage their resources. Option B emphasizes the importance of family planning in reducing or eliminating the fear of unwanted pregnancies, which can have significant emotional and financial implications for couples. Option C points out that family planning can also afford family members time to focus on personal development, such as studying or pursuing personal interests, without the added responsibilities of unplanned pregnancies. Therefore, all these factors combined can serve as strong motivators for couples to consider and practice family planning. Choices A, B, and C are incorrect because each of them individually provides a valid reason to motivate couples, making the comprehensive answer D the most appropriate.