Question

The principal energy source for millions of people in developing countries is

(a) Coal
(b) Petroleum

(c) Firewood
(d) Water​

Answer 1

Water is the principal energy source for millions of people in developing countries.

Explanation:

1. The capacity of the system to perform work is so-called energy.
2. Energy sources are renewable and non-renewable in nature.
3. Water is one such renewable energy source and so massive investments are made in such projects.
4. This type of energy has many more advantages as it is ecofriendly, No wastage is produced, minimal transmission loss, a very small amount of investment is needed to maintain, etc are some of the advantages of using water as a resource.
5. Therefore, developing countries have water as a principal energy source for solving many issues.

Answer 2

Answer:

The principal energy source for millions of people in developing countries is D] water.

Explanation:

Water is definitely a finite and an almost irreplaceable resource that is highly fundamental to all humans for their well-being. It is also the only renewable resource that can be replenished if well managed.