How did the Emancipation Proclamation affect food production in the South?
A. It inspired enslaved field workers to work harder.
B. It increased the need for food supplies in the South.
C. It inspired many enslaved field workers to escape to the North.

C

Explanation: Slaves from the north were free and encouraged to take arm in fighting their former masters {the south} as their former masters did not want to free them as they were the source  for food production. The slaves then wanted to be free so some of them escaped from the south and went to the north in search of freedom.

It can provide a social code to protect each citizen's future economical earnings. and then obviously defending the country from invading countries.