Step 1: Understanding the question's focus.
The question asks to identify a pioneer among Indian sculptors for integrating "craft media and techniques" into their work. This implies a conscious effort to bridge the gap between fine art (sculpture) and traditional crafts.
Step 2: Evaluating the artists' contributions.
While all the listed artists are significant, Sankho Chaudhuri is particularly renowned for his elegant and simplified forms and his extensive experimentation with various media. He actively incorporated techniques and materials from traditional Indian crafts into his modernist sculptural practice, making him a pioneer in this regard.