Can i get some help on this

Cell specialization occurs by the process ofa. reproductionb. differentiationc. maturationd. growth

Plz ! 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 the technique called? a. selective breeding. b. natural selection. c. mitosis. d. asexual budding.

Stephen is a student who wants to test his knowledge of medical terminology. which option could he use?