Final answer:
The main benefit of using genetically modified organisms is that they can be engineered to have desirable traits, which can increase food productivity and reduce production costs.
Step-by-step explanation:
The main benefit to using genetically modified organisms (GMOs) is that they can be engineered to have desirable traits, such as disease resistance, herbicide and pesticide resistance, better nutritional value, and longer shelf-life. This can help increase food productivity, reduce production costs, and meet the demands for food while minimizing the use of synthetic pesticides. For example, GMOs have been used to create transgenic crops that yield more food and resist insect pests.