0. When the moon is near the horizon, then it appears bigger because of
When the moon is near the horizon, the atmosphere bends light due to refraction, which makes the moon appear larger than when it's overhead.
A. Atmospheric refraction – Correct. Bending of light causes apparent enlargement.
B. Scattering of light – Incorrect. Responsible for color effects, not size.
C. Diffraction – Incorrect. Involves bending of light around objects, not relevant here.
D. Total internal reflection – Incorrect. Occurs in optics and water, not in this case.