Answer:
Two lines and a point are said to be coplanar if the two lines share only a single point.
Explanation:
A line is a one dimensional figure such that it has no thickness. Plane is a two dimensional figure which actually extends infinitely .
Points are said to be coplanar if they lie on same plane and lines are said to be coplanar if they lie in the same plane.
We need to find the condition under which two lines and a point are coplanar .
Two lines and a point are said to be coplanar if the two lines share only a single point.
So, option b. is correct i.e., they lie in the same plane .