Kinetic energy and mass are
proportional.

Kinetic energy and mass are directly proportional to each other

Explanation:

As we know by the formula of kinetic energy

now we know that

kinetic energy depends on the mass of object and it is product of mass and square of the speed.

Here we can say that if mass is doubled then kinetic energy also get double and if mass is decreased then kinetic energy also decreases

This type of relationship is known as direct relationship and here since it shows direct relationship so correct answer will be

Kinetic energy and mass are directly proportional to each other

c. newton's third law of motion

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle  

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.