Answer:
Billy is correct.
Explanation:
We have that,
The converse of the given line is 'A line could be a part of a ray'.
Since, it is known that,
1. Ray - is a line segment having one end-point and other side extending infinitely.
2. Line - is a line segment having two end-points.
So, we see from the figure below that,
The ray AB has a line AC included in it.
Thus, a line can be a part of ray as we can select any point on the side extending to infinity to form a line.
Hence, Billy is correct i.e. 'A line could be a part of a ray' is true.