Which Republic Act empowered local government units to oversee agricultural extension?

The correct choice is Republic Act No. 7160, also known as the Local Government Code of 1991, which significantly empowered local government units (LGUs) in the Philippines. This act devolves the responsibilities for agricultural extension services to local governments, allowing them to play a crucial role in planning, implementing, and managing agricultural extension programs tailored to the needs of their local communities.

This devolution promotes greater local autonomy and encourages participatory governance, leading to more responsive agricultural services. By enabling local government units to oversee these extension efforts, the Act fosters the development of rural areas through localized strategies that are better suited to address the specific agricultural challenges and opportunities in each locality.

In contrast, the other options refer to different legislative acts that do not specifically focus on empowering local governments in agricultural extension. Therefore, understanding the role of Republic Act No. 7160 in the context of local governance and agriculture emphasizes its importance in enhancing agricultural productivity and rural development through decentralized governance.