Farmers raise crops that have been made virus-resistant by adding a gene from the teosinte weed. This is an example of... * natural selection.
gene therapy.
genetically modified organisms.
artificial selection.

C. genetically modified organisms.

Explanation:

Hope this helps! :)

I would appreciate brainliest, if not that's okay!

a. possible errors

d. new questions

explanation:

predictions and planning happen before. a summery comes after. errors you get after investigation and new questions propose what you can look for in the future.