If a metal has a specific heat, then the metal could make an excellent material for cookware because

a. it can absorb much more heat before the temperature increases.
b. it maintains a constant temperature.
c. it takes less heat to raise the temperature of the metal.
d. it will not burn food.

C) Because it takes less heat to raise the temperature of the metal

Explanation:

A) No. Metals have low specific heats compared to other solids thus they would absorb less heat in order to increase the temperature

B) No. Since they have lower specific heats they are more vulnerable to temperature changes due to variations in the heat rate

C) Yes. It takes less heat to raise the temperature of water due to their lower specific heats

D) No. Because the temperature can be chosen regulating the heat rate to the cookware. Also food burning is related with thermal conduction of cookware and from the cookware to food.

vapour or gas assuming atmospheriv pressure

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.