Concept:A thrift and credit cooperative society mainly promotes regular saving and provides credit facilities to its members.
Explanation:The word "thrift" means the habit of saving money.
This society offers members a safe and convenient means to save money, often through monthly salary deductions.
It also grants loans at a reasonable rate of interest without requiring collateral.
Its ultimate goal is to encourage a saving culture among members and protect them from exploitation by lenders.
Therefore, the main function of the society is to encourage members to save.
Answer:D. encourage members to save