Answer:
it depends what kind of energy your taking about, like human energy or nonrenewable energy. If it is human energy then the option c, but if it is nonrenewable energy than b.
Explanation:
the other options aren't very logical
A gene is (in informal use) a unit of heredity which is transferred from a parent to offspring and is held to determine some characteristic of the offspring.
A cladogram is a diagram of branches that show the cladistic relationship between animal species. A node you can expect to find on the cladogram would be <span>Deuterostome development. Examples of deuterostomes are starfish and sea cucumbers.</span>
Ans. An isotope of Hydrogen called Tritium has one Proton and two Neutrons and its mass is 1
Hope this helps.
The nervous system, i could be wrong.