Read this excerpt:

well, according to a united nations' report cited on the

mother nature network site, the production, consumption,

and disposal of meat results in - get ready – 70 percent

of the world's water consumption, a full 38 percent of the

world's land use, and almost 20 percent of all greenhouse

gas emissions.

why does the author cite this information in the article?

a. to show that meat eaters practice disgusting and unhealthy

habits

b. to prove that vegans are healthier than people who eat meat

products

c. to criticize those who don't support serious environmental issues

d. to respond to the counterclaim that veganism is bad for the

environment