Question

which is a form of renewable source of energy

Answer 1

An example of a form of a renewable source of energy would be hydropower.

Answer 2

The word renewable means which can be gained back again. Example for the form of renewable source of energy is Hydropower,Solar power etc.
These are the form of renewable energy bcoz it can be gained back where is in non renewable energy the substance cannot be gained back like in Thermal Power Corporation the coal which is burnt for making power cannot be gained back.
Hope this helps