District Rural Development Agencies (DRDAs) are instrumental in addressing rural poverty and implementing anti-poverty programmes in India. They help reduce poverty by coordinating and cooperating between sectors and departments to ensure effective implementation of such programmes (Statement 3). They also ensure the funds intended for these programmes are effectively utilized, therefore avoiding misuse and misallocation of resources (Statement 4).

Statement 1 is incorrect as DRDAs do not act as Pancyayati Raj Institutions, they are distinct bodies with their own roles and responsibilities.

Statement 2 is inaccurate too because DRDAs do not undertake area-specific scientific studies on poverty and malnutrition, their primary focus is on implementing existing government programs, not conducting new research.

Hence, the correct answer is option- 2, which states that only statements 3 and 4 are correct.