Question

which term in the passage includes a formal definition?
nutritional value (paragraph 5)
herbicide - resistant super - weeds (paragraph 6)
processed foods (paragraphs 3 and 4)
genetically modified organisms (paragraphs 1 and 2)
reading passage
genetically modified foods—to eat or not to eat?
1 new questions and concerns about the safety and quality of our food seem to arise every day. “what is in our food?” “where was it grown?” “is it healthy and nutritious?” one increasing concern involves foods that contain genetically modified organisms, or gmos.

Explanation:

A formal definition is a clear and explicit statement of what a term means. In the passage, "genetically modified organisms" is followed by "or GMOs", which is a way of defining the term. The other terms like "nutritional value", "herbicide - resistant super - weeds", and "processed foods" are not formally defined in the given context.

Answer:

genetically modified organisms (paragraphs 1 and 2)