Which type of trees were prioritised in commercial forestry?

Correct answer: Trees giving strong and marketable timber

The direct answer is C: trees giving strong and marketable timber were prioritised. Commercial forestry was designed to serve government and market needs, not to preserve every natural species equally. Step by step: railways, ships, buildings and industries required durable wood; officials identified species with strong, useful timber; those trees were planted or managed in larger numbers; species without commercial value received less priority. C is correct because strength and saleability were central selection criteria. A is wrong because flowers were not the main reason for choosing forest trees. B is wrong because trees described as useless would not meet commercial aims; also, a tree may be ecologically useful even if it is not profitable. D is wrong because shrubs generally could not provide the large timber required for construction or railway needs. Be careful: “commercially useful” does not mean “best for nature.” Memory cue: commercial forestry asks, “Which wood sells and serves industry?”