The correct answer is C. A parallelogram has two lines of reflection: one along each diagonal that will carry it onto itself.
To clarify:
- A parallelogram does not have horizontal or vertical lines of symmetry that run through the midpoints of its sides. Instead, the lines of reflection are the diagonals.
- Therefore, statement A is incorrect as it overstates the number of lines of symmetry.
- Statement B is incorrect because it states that a parallelogram has no lines of reflection.
- Statement D is also incorrect since it incorrectly mentions horizontal and vertical lines of reflection that do not apply.
Thus, the most accurate summary is provided in option C.