What was needed for roads and construction works?

Correct answer: Land and timber

Direct answer: Option A, land and timber, is correct. Roads and construction require physical space for routes, bridges, buildings, and work sites, so land is needed. They also require wood for beams, supports, bridges, railway sleepers, tools, and other construction purposes, especially in the colonial period. Therefore the combined answer ‘land and timber’ fits the question. Option B is wrong because milk is a food product and is not the basic material needed to build roads. Option C is wrong because flowers may be decorative but are not structural construction materials. Option D is wrong because sea water cannot provide the land surface or timber required for ordinary roads and construction. The reasoning is simple: construction needs a site plus materials; in forest regions, clearing land and cutting trees supplied both. This demand contributed to deforestation when colonial projects expanded. Memory cue: roads need room; construction needs wood. The supplied answer is accurate.