Answer:
B. Sometimes
Explanation:
It is required to complete 'Any three distinct points are ____ collinear'.
We know that two points form a line or a line segment.
Now, if we add a third point, it is not always true that the point will lie on the same line. It is possible that it is not lying on the line.
So, option A is discarded.
As, the point can also lie on the line gives that option C and D are not correct.
Hence, we get that 'Any three distinct points are SOMETIMES collinear'.
So, option B is correct.