Question

look at this shape: which image shows a reflection?

Explanation:

Reflection in geometry means creating a mirror - image of a shape. A reflection flips the shape over a line (the line of reflection). In option B, the triangle is flipped horizontally compared to the original shape. Option A is not a reflection (it is just a translation or shift in position without flipping). Option C is a larger - sized triangle (a dilation) and not a reflection.

Answer:

B.