At sun rise of sunset, the sun looks more red than at mid-day because
A
Of the scattering of light
B
Of the effects of refraction
C
Of the effects of diffraction
D
The sun is hottest at these times
Correct option is B. Of the scattering of light
$$I\propto\dfrac{1}{{\lambda}^4}$$
According to Rayleigh’s law of scattering, intensity scattered is inversely proportional to the forth power of wavelength. So red is least scattered and sun appears Red.