Answer-
The correct options are,
1.
B. H, A, and S
C. H, D, and S
2.
C. The line has infinitely many points.
3.
A. MP
Solution-
1.
Three or more points are said to be collinear, if they lie on a single straight line.
In the image 1, points H, D, A, S are on a single straight line.
So, points H, A, S and H, D, S are collinear.
2.
The line passing through points A and B is a straight line.
Straight line has infinite length in both the direction, so it contains infinitely many points.
So, option C is correct.
3.
While naming a straight line the order does not matter.
As PM is a straight line, so it can be written as MP.