Let's match the schemes with their main objectives:
A. Mission Antyodaya: Aims at poverty alleviation through the effective use of resources and convergence of various government schemes at the village level. So, A matches with III.
B. Sansad Adarsh Gram Yojana (SAGY): Focuses on the holistic development of Gram Panchayats (identified as Adarsh Grams) by Members of Parliament. So, B matches with IV.
C. Shyama Prasad Mukherji Rurban Mission: Aims to deliver integrated project-based infrastructure in rural areas, which will also include development of economic activities and skill development, essentially providing urban-like facilities in rural areas. So, C matches with I.
D. Integrated Watershed Management Programme (IWMP): (Assuming this is what 'Water Management' refers to) Primarily focuses on soil and water conservation to achieve improvement in land productivity. So, D matches with II.
The correct combination is A-III, B-IV, C-I, D-II.