Read the following Assertion (A) and Reason (R), and choose the correct answer. Assertion (A): Average nearest-neighbour analysis can assess whether a point pattern is clustered or dispersed relative to a random pattern. Reason (R): It compares the observed mean nearest-neighbour distance with the expected mean distance for a random point distribution of the same density.
Both (A) and (R) are true and (R) is the correct explanation of (A).
Both A and R are true, and R explains A. Average nearest-neighbour analysis compares observed spacing with the mean spacing expected for a random point distribution at the same density. Smaller observed distances indicate clustering; larger distances indicate dispersion. Line and polygon implementations require a specified representation, such as centroids.
| List I (Name of Shifting Cultivation) | List II (Country) |
| A. Milpa | 1. Zaire |
| B. Ladang | 2. Brazil |
| C. Rocca | 3. Malaysia |
| D. Masole | 4. Mexico |