To determine which two points on the number line are opposites, we first need to identify the numerical values of points A, B, C, and D based on their described positions.
- Point A is 1 mark to the right of -2, so A = -2 + 1 = -1.
- Point B is 1 mark to the right of -1, so B = -1 + 1 = 0.
- Point C is 1 mark to the right of 0, so C = 0 + 1 = 1.
- Point D is 2 marks to the right of 1, so D = 1 + 2 = 3.
Now we have the following values:
- A = -1
- B = 0
- C = 1
- D = 3
Two points are considered opposites if one is the negative of the other. In this case:
- The opposite of -1 (point A) is 1 (point C).
Thus, the two points that are opposites are points A and C.
Since this specific pairing isn't in the provided options, we need to reconsider the original problem statement. Let's evaluate:
- Opposite pairs from the options given:
- Points A and D (-1 and 3) — are not opposites.
- Points B and C (0 and 1) — are not opposites.
- Points C and D (1 and 3) — are not opposites.
- Points A and B (-1 and 0) — are not opposites.
None of these options present points that are true opposites; rather, it's important to clarify that the description provided was intended for A (-1) and C (1) instead.
However, from the options available in the question, no correct pairs of opposites can be selected.