Answer:
B, Benedict Arnold.
Benedict Arnold switched to the British side in the Continental Army.
Add-on:
i hope this helped at all.
The farmer: he does not spread culture.
illness: it is a diffusion, but not of culture
The <span>development of a writing system : it is cultural, but there is no diffusion involved
a merchant traveling to sell his goods in another society- yest, this is true! the goods are connected to culture, and the merchant traveling is contributing to the diffusion!</span>
