For many generations, farmers in north america have been choosing to cross corn plants with large ears of corn each year. this results in the new generation of plants also growing large ears of corn. what is this technique called? a. selective breeding b. natural selection c. mitosis d. asexual budding

This technique is called selective breeding so answer A. Farmers and scientists use this technique to bring desirable traits or characteristics from one plant or animal and breed it with another to have the offspring acquire the traits. 
Natural selection is when organisms adapt to survive in an environment. 
Asexual budding is when a plant essentially clones itself to reproduce.
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