Answer:
The best answer seems indeed to be letter A) bringing back to former position of condition.
Step-by-step explanation:
According to the paragraph, the Dust Bowl was the result of drought and over-farming. Farmers had to use the money in their bank accounts when they were no longer able to support themselves, which lead to bank failure. When president Roosevelt called for restoration, he was publicly promising the American people that things would go back to the way they were before the Dust bowl, that things would go back to their former condition. By restoring things, people would once again be able to provide their families, and the American economy would grow. Therefore, the best option for the connotation of "restoration" in this excerpt is letter A) bringing back to former position of condition.