Concept:
M.N. Srinivas was a famous Indian sociologist known for his studies on caste and village society.
Step 1:
Srinivas conducted detailed studies of Indian villages to understand caste relations and social mobility.
Step 2:
Sanskritization refers to the process by which lower castes adopt upper caste customs and practices to improve status.
Step 3:
The concept helped explain social mobility within the caste system in India.
Step 4:
Education, development, and consolidation are not the specific sociological concept associated with Srinivas' caste study.
Step 5:
Therefore, the correct answer is Sanskritization.
\[
\boxed{\text{(3) Sanskritization}}
\]