For reflection to take place, the point must be reflected across a line.
The complete statement about point P is:
The point P must be on line 1 because otherwise it moves from one side of the line to the other.
From the question, we understand that;
The location of point P, before and after the reflection remains unchanged.
This means that, point P is on the line of reflection (i.e. line 1).
Because, if point P is not on that line, the location will change, after reflecting the line.
Hence, the true options are:
(c) On
(c) Moves
See attachment for illustration of line of reflections.
Read more about reflections at:
https://brainly.com/question/15487308
