(A) to make more water in the world
(B) to make it easier for people to go from one place to another
(C) ** to create a waterway connecting one ocean to another ocean and make travel time faster.
EXPLANATIONS BELOW
Concept note-1: -A canal is a human-made waterway that allows boats and ships to pass from one body of water to another. Canals are also used to transport water for irrigation and other human uses.
Concept note-2: -Canals or artificial waterways are waterways or engineered channels built for drainage management (e.g. flood control and irrigation) or for conveyancing water transport vehicles (e.g. water taxi). They carry free, calm surface flow under atmospheric pressure, and can be thought of as artificial rivers.
Concept note-3: -They are used to stop water from rivers, streams from flowing into the sea.
Concept note-4: -Navigable canals connect seas, lakes, and rivers and are vital because they offer shorter transport routes and also help regulate intra-country water transport. Around the world, there are hundreds of transport channels of varying lengths, widths, and depths to facilitate the daily movement of various vessels.