Instead of testing the options one by one, name each of the four diagrams first, then see which options agree with those names.
- P: a dense, irregular cluster of buildings beside the agricultural field, with no repeating street geometry. This is the Organic pattern, the kind that grows unplanned around an old village core.
- Q: streets cross each other at right angles forming neat rectangular blocks. This is the Grid Iron pattern, seen in planned cities like Chandigarh's sectors.
- R: rows of plots curve along the bank of a meandering river. Even though the rows curve, the development is still stretched out as a single ribbon following that river, so this is the Linear pattern.
- S: concentric rings are cut by roads radiating outward from a central point. This is the Radial (or radial-concentric) pattern.
With P = Organic, Q = Grid Iron, R = Linear, and S = Radial fixed, option (A) "P-Organic, R-Linear" is fully correct, and option (C) "Q-Grid Iron, S-Radial" is also fully correct. Option (B) fails because it calls Q Linear, but Q is Grid Iron. Option (D) fails on both counts, since Q is not Organic and R is not Radial.
Let's summarize:
- P is Organic, R is Linear, so option (A) holds.
- Q is Grid Iron, S is Radial, so option (C) holds.
- Options (B) and (D) each misname at least one pattern.
So the correct options are (A) and (C), that is, 1,3.