Why was bronze useful for Bronze Age civilizations?

Correct answer: Tools, weapons and crafts improved

Bronze was a useful material because it is generally harder and more durable than pure copper. Bronze is mainly an alloy of copper and tin. Its improved strength allowed people to make more effective tools, weapons and craft objects. These improvements could support farming, building, cutting, defence and skilled production. Therefore, option A is correct. The other choices do not follow from the use of bronze: bronze did not stop mummification, dry up rivers or make trade impossible.

To solve the question, connect the Bronze Age with advances in metal technology. When copper is combined with tin in suitable proportions, the resulting bronze can be shaped and used for stronger implements than many earlier copper tools. Better tools and weapons affected work, warfare and craftsmanship, while the movement of metals also encouraged exchange between communities. The question asks why bronze was useful, so its practical improvement of tools, weapons and crafts is the relevant answer. Hence A is the only choice supported by the historical idea.