What do rows of plantation indicate?

Correct answer: Planned scientific management

The direct answer is option D: rows of plantation indicate planned scientific management. Natural forests usually contain many species of different ages, sizes and shapes growing in a less regular pattern. When trees are planted in straight, repeated rows, it shows that people selected a site, selected a species, measured distances and planted according to a plan. This was a feature of scientific forestry, especially when colonial authorities wanted a regular supply of commercially useful timber. Option D is correct because rows reveal deliberate organisation and management. Option A is wrong because an unplanned forest would not normally show such regular spacing. Option B is wrong because sea farming has no relation to rows of land-based trees. Option C is wrong because a cotton market is a trading place or economic activity, not an explanation of tree rows. The important observation is visual: regular lines suggest human planning, not natural growth. However, planned does not automatically mean ecologically diverse; plantations could reduce biodiversity. Memory cue: “Straight rows = human plan = scientific forestry.”