PLEASE HELP I WILL GOVE THE BRAINIEST AND PLEASE, I DONT WANT NO LINKS What is the main idea of this text?

А. The colors of a rainbow form an arc because of the angles at which light
of different wavelengths reaches your eye.

B. Rainbows form when sunlight enters raindrops, splits into different color
components, and then re-emerges from the raindrops.

C. You will only see rainbows when there is rain in front of you and somewhat
in the distance, and the sun is behind you and fairly low on the horizon.

D. sunlight is composed of light of Cary wavelengths. Short wavelengths light appears blue and long wave length light appear red

The Visible Light Spectrum and the differences in wavelength and appearance.

Explanation:

I stated this by using the concept of the visible light spectrum. As indicated already in reference to the statements provided, you are observing what is known as the visible light spectrum. This is indicated because the visible light spectrum obtains all the colors of the rainbow and not only that but the statements even use key terms such as wavelengths and different color components. Therefore, signifying that you are looking at the visible light spectrum and observing it on an appearance based observation based on background facts and scientific knowledge. To further evaluate the visible light spectrum in terms of wavelength, both statements A and D provide information regarding the differentiation within wavelengths based on the color in which one perceives. Whereas B and C simply state scientific facts about how the rainbow appears.

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.