Consider the following Karnaugh Map (K-map). Minimal Function generated by this Karnaugh map is: 
Step 1: K-map Simplification.
The minimal function is derived from the provided K-map by grouping the ones and simplifying the resulting terms. The groupings yield the following minimal terms:
- \( P.Q' \) from the top-left group.
- \( Q.S' \) from the second row.
- \( P.S' \) from the second column group.
Step 2: Conclusion.
The final minimal function is \( P.Q' + Q.S' + P.S' \).