(a) Governmental Agency for Pollution Control

(b) Gross Assimilation by Photosynthesis

(c) Ganga Action Plan

(d) Governmental Agency for Animal Protection

Correct option – ( c )

Explanation – GAP stands for Ganga Action Plan . Its main aim was to improve the quality of the water by treating the domestic sewage and prevents the chemicals emitted from the factories to pollute the water .