Geometry

The correct answer is: D. and ;  and .

1. Recall the definition of opposite rays:

Opposite rays are two rays that share the same endpoint and extend in exactly opposite directions on the same straight - line.

2. Analyze the rays on line :

For the pair  and , the endpoints are different ( for  and  for ), so they are not opposite rays.

For the pair  and , the endpoints are different ( for  and  for ), so they are not opposite rays.

For the pair  and ,  the endpoints are different ( for  and  for ), so they are not opposite rays.

For the pair  and , both rays have the same endpoint  and extend in opposite directions on line