I think it's A not sure tho
Their are three main characteristic is intensity, saturation, and hue .
Red color is motivated by power, black is achromatic color with hue like white gray and white.black is symbol of darkness. Brightly co-loured object is one that reflects and transmits a large portion of light falling on it.
The great amount of light is reflected on white screen while a black screen would not reflects any light. Co-lour also linked with various personality trait , motivation and productivity levels in life. It symbolize life and death , love and evil and happiness and anger.Red color makes you feel passionate and energized.
To learn more about motivation here
brainly.com/question/972761
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It shows the evolution of certain species through the bone structures of the fossils.
The answer is D. Food Threshold is the amount of food capable on feeding the organisms.
