Light and sound waves both share what characteristic? (2 points)

a they both exhibit the doppler effect.
b light and sound are both transverse waves.
c they both move fastest in water.
d light and sound both require a medium in which to travel.

a They both exhibit the Doppler effect.

Explanation:

When source of light or sound and the observer will move relative to each other then due to relative motion of them the frequency of light or sound that is observed by the observer is different from its actual frequency. This phenomenon is known as Doppler's effect.

So here the same characteristic that is exhibit by both is Doppler effect

apart from this

Light is transverse in nature while sound wave is longitudinal

Sound moves faster in water while light moves fastest in air

light do not requires any medium while sound requires medium to travel

so correct answer will be

a They both exhibit the Doppler effect.

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explanation:

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.