Answer:
X
Explanation:
Reflective symmetry, also known as mirror symmetry, exists when a figure can be reflected across a line and appear the same. Rotational symmetry exists when a figure can be rotated about a point by a certain degree less than 360 and still appear the same.
Among the uppercase letters W, X, Y, and Z:
The letter W has no reflective or rotational symmetry.
The letter X has both reflective and rotational symmetry. It's symmetrical on both the vertical and horizontal axes and has a rotational symmetry of 180 degrees.
The letter Y only has reflective symmetry on the vertical axis, but it does not have rotational symmetry.
The letter Z also has reflective symmetry on the horizontal axis, but it does not have rotational symmetry.
So among these letters, only X has both reflective and rotational symmetry.