Genetic engineering is the process of using recombinant DNA (rDNA) technology to alter the genetic makeup of an organism. One of its advantages is making the crop plants resistant to weed killer.
•What do you think would make the crops resistant against the weed killers?

A. Many weed killers remain active for years.
B. The weed killers also kill moth and butterfly larvae.
C. It increases the erosion of topsoil making them more resistant.
D. The cost of producing these crops is less since they do not need to be weeded.​