Step 1: Tradition and change.  
D. P. Mukherjee highlighted that Indian society’s evolution is deeply rooted in its traditional institutions, beliefs, and cultural practices. 
Step 2: Analytical approach.  
Understanding social change requires examining continuity and adaptation of traditions to modern contexts. 
Step 3: Conclude.  
\[
\boxed{\text{D. P. Mukherjee (Option A) stressed tradition in understanding change.}}
\]