What is the purpose of genetically modified crops?
o
a. decreasing the number of farmers
b. decreasing the price of seeds
o
o
c. increasing the cost of food
o
d. increasing the food supply

The purpose of genetically modified crops is increasing the food supply.  

Explanation:

When crops are attacked by pests the yield of the crops reduces. The natural pest tackling adaptations of the plant is not just enough to check the invasion of crops by pests. Introducing feature of pest resistance into the genes of plant species will make them pest resistant.  

Genetic modification is the method used to achieve this objective. In genetic modification a previously absent feature is introduced into a plant species by various scientific techniques. This feature can be pest resistance, chemical resistance, improved nutrient profile etc.