Answer:
The union was founded because New deal programs disproportionately helped large commercial farms ( B )
Step-by-step explanation:
The New deal farm relief efforts that was made as part of the new deals made in order to help the American economy and the American people out of the great depression lead to the formation of ( AAA ) agricultural adjustment act . The AAA was about paying subsidies to farms usually large farms in other to reduce the production of agricultural products in commercial quantities so that the price of agricultural produce in the market would rise.
This act caused so many tenant farmers and sharecroppers to lose their jobs and hence the Southern Tenant Farmers Union which was initially formed to protect the sharecroppers and tenant farmers during the great depression went on series of protests asking to be paid subsidies as well .