Answer:
The correct answer is C: "photosynthesis can happen under lights that are not the sun"
Explanation:
A) photosynthesis does not require any light for a plant. This is not correct, as in order to photosynthesize any plant need light. In its absence, the plant does not obtain any energy and is not able to produce organic matter.
B) plants grow best when they are grown under a black light: This is not correct because, in comparison with other lights of different colors, plants grown under a black light are ones that show the less growth rate.
C) photosynthesis can happen under lights that are not the sun: This is correct. Photosynthesis can indeed occur under other lights. There are different factors to take into count if we want plants to grow under artificial conditions, such as the amount of light, times of light per day and the color of the light.
D) plants cannot grow unless they are exposed to natural sunlight: This is not correct. Although sunlight is the best option for any plant to grow in the correct time and form, these organisms might also grow under artificial lights of different colors or wavelengths. The plant might respond in different ways, depending on the light it is exposed to, but eventually, it will show some growth.
