A sampling in which sub groups in population represents in sample in the same proportion as they exist in population?

A sampling in which sub groups in population represents in sample in the same proportion as they exist in population?
(a) Probability sampling
(b) Random sampling
(c) Stratified sampling
(d) Cluster sampling
✅ Correct option: (c) Stratified sampling
Explanation: Stratified sampling ensures representation of subgroups proportionally.