which of the following is always true?

Explanation

The correct answer is that distance is always greater than or equal to displacement. This is because distance is the total path length traveled, while displacement is the shortest straight line distance between the starting and ending points. Therefore, distance can never be less than displacement, but it can be equal when movement occurs in a straight line. Option A is correct. Option B is incorrect because distance cannot be less than displacement. Option C is incorrect because distance is only equal to displacement under specific conditions. Option D is incorrect because the relationship between distance and displacement is clear and can be determined.