I know for sure that the second one is going to be C.)
Grain is used to feed cattle and livestock because it is healthy, cheap, ethical, and easy to grow in some American climates. Grain is the easiest and most cost-efficient way to feed livestock.
<span>Volunteering at the Red Cross is the right thing to do, something that affects the greater good. You will feel good about yourself, get to meet patients with stories that could change your life, and you might even get school credit for volunteering. You will even become part of a 130-year-old tradition, helping neighbors in need. Volunteering at the Red Cross can change your life, and the lives of many other people.</span>
C and D are the best answers out of the bunch
