There is a lot of water on the ground after the rain. On the moonlit night, when Xiao Ming walked, he didn't want to step into the water himself. The correct way to walk is (

In calm water, specular reflection can occur, and the ground is uneven, and diffuse reflection can occur.

(1) As shown in the figure, when walking against the moonlight, the moonlight is reflected by the mirror of the water surface, and enters people's eyes to reflect more light, making people feel that the water surface is bright; Diffuse reflection occurs on the ground, and little light enters people's eyes. People feel that the ground is black, and they don't want to step on the stagnant water and walk in the dark when facing the moonlight.

(2) As shown in the figure, when walking with moonlight on your back, the moonlight is reflected by the mirror of the water surface, and no reflected light enters people's eyes, making people feel that the water surface is dark; Diffuse reflection occurs on the ground and a small amount of light is reflected into people's eyes. People think the ground is bright, so they don't want to step on stagnant water and walk in bright places with moonlight on their backs.

So choose a.