What was a negative impact of “bonanza” farms?
a. output declined.
b. farms got smaller.
c. farms became disorganized.
d. oversupply led to lower prices

One negative impact of “bonanza” farms was that "d. Oversupply led to lower prices". Farmers flooded the market with products which made competition harder and led to poor conditions for not only the community but the farmers themselves. 

Delaware, pennsylvania, new jersey, georgia, connecticut, massachusetts bay, maryland, south carolina, new hampshire, virginia, new york, north carolina, and rhode island and providence plantations where the 13 original colonies