Genetically-modified crops are foods whose genetic material has been changed to grow bigger, faster or more resistant to pests.

• A. Foods produced by selective breeding
• B. Foods grown without genetic modification
• C. Foods whose genetic material has been changed to grow bigger, faster or more resistant to pests
• D. Foods treated with pesticides

Answer: (C)

Genetically-modified crops involve changing the plant’s genetic material in a deliberate way, usually in a lab, to introduce traits such as bigger size, faster growth, or resistance to pests. The statement matches this idea exactly by saying the genetic material has been changed to achieve those traits.

Foods produced by selective breeding also change traits, but they do so through choosing and mating already existing plants over generations rather than directly editing the plant’s DNA in the lab. Foods grown without genetic modification have not undergone this genetic alteration, and foods treated with pesticides rely on chemical control after growth rather than changing the plant’s genes.