The correct option is C Self-help groups
Microfinance services provide micro credit facilities to people to promote self-employment. Generally, the beneficiaries of microfinance services are various small self-help groups.
Self-help groups are small groups with usually not more than 20 members. Members of these groups meet up and save money on a regular basis. They use their savings as capital in their various business operations. Banks too provide them loans at a low interest rate. This amount is disbursed as loan among the members in need. Thus, it helps in mobilising money from individuals for collective development.