Answer: c) To direct excess water away from roads and structures
Explanation:
The primary purpose of a drainage channel in civil engineering is to manage and direct excess water away from roads, buildings, and other structures to prevent flooding and water damage. These drainage channels do not have to do with electrical wiring or the foundation of a building. As well, they direct water away from the homes, not towards them. For these reasons, our answer is c.
c) To direct excess water away from roads and structures