Answer:
If a plane contains a line, it contains the points on the line.
Explanation:
A plane is a flat and a two-dimensional surface which extends infinitely.
While a line is a straight one dimensional infinite figure that does not have any thickness.
Also, if a line lies in a plane then all points lying in the line also lie on the plane.
Hence, the statement that best justifies the conclusion based on the given information is,
If a plane contains a line, it contains the points on the line.