Final answer:
An artificial waterway constructed for the movement or conveyance of water, typically for boats and irrigation, is a canal. A canal is not the same as a dam, which retains water, a reservoir, which stores it, a levee, which contains it, or a moat, which is defensive. The correct option is 3.
Step-by-step explanation:
An artificial waterway constructed to allow the passage of boats or ships inland or to convey water for irrigation is known as a canal. Canals can connect two previously unconnected bodies of water and have various applications, including irrigation, navigation, and water supply.
A well-known example of an engineering marvel is the Panama Canal, which includes a man-made lake called Lake Gatún to raise ships to a higher inland elevation before transit. In contrast to a dam, reservoir, levee, or moat, a canal is specifically designed for movement through or conveyance of water.
Hence, Option 3 is correct.