That would be the color white. It is due to all the colors being reflected equally. To see colors we are actually seeing the color that is being reflected by the object while others are absorbed.
The answer would be letter A. globular cluster. This group of very old stars that are clustered together in a spherical in shape and can contain from 10,000 to several million is called a globular cluster. In our galaxy, there are 150 globular clusters.
D. dilute the fertilizer with a base such as water