Option B - The darker the color produced, the more light absorbed in the specimen; the more light absorbed, the higher the concentration of the analyte is correct.
The Beer's law commonly known as Beer Lambert's law relates the attenuation of light to the properties of the material through which the light is travelling.
The law states that the amount of energy absorbed or transmitted by a solution is proportional to the solution's molar absorptivity and the concentration of solute. In simple terms, a more concentrated solution absorbs more light than a more dilute solution.
The law is commonly applied to chemical analysis measurements and used in understanding attenuation in physical optics, for photons , neutrons or rarefied gases.