Why did the popularity of the grange decline?
a. its leaders were weak and ineffective.
b. it became corrupt and lost the farmers’ trust.
c. it did not address the farmers’ economic needs.
d. it was not able to obtain political power in the state.

The popularity of the Grange decline because it did not address the farmers economic needs. The correct option among all the options given in the question is option "C". The Granger movement was started by a single individual by the name of Oliver Hudson Kelley. The Patrons of Husbandry was started in the year 1867 by Kelly. 

Im pretty sure the answer is d.) is more densely populated.