Which of the following refers to foods developed by genetic manipulation?

The term that refers to foods developed by genetic manipulation is genetically modified organism (GMO). GMOs are organisms whose genetic material has been altered through biotechnology, often to enhance certain traits such as resistance to pests, increased nutritional value, or improved growth characteristics. This manipulation can involve the insertion of genes from other species, thereby enabling characteristics that would not occur naturally.

Understanding GMOs is vital in discussions about food safety, environmental impacts, and agricultural practices. The other terms do not specifically denote foods developed through genetic manipulation. Functional foods usually refer to foods that offer health benefits beyond basic nutrition. Natural food typically signifies foods that are minimally processed and free from artificial ingredients, while diet food focuses on foods designed for weight management, which may not have any relation to genetic manipulation.