If want a direct answer it would be the decrease in mice, but if you want to get technical the decrease in grain spills caused mice to leave so that would be the indirect cause
I think the answer is A because direct sunlight causes dyes in clothes to fade quietly.
Plasma contains proteins (to help blood to clot), and it transports substances through the blood stream. The plasma also contains glucose and other dissolved nutrients. It can also carry water, salts, and enzymes. Plasma has a very light yellow color, such as the color of straw.
The main purpose: is to<u> transport nutrients, hormones, and proteins</u> to different parts of the body!
