Which of the following statements about biofuels is true? a. biofuels are composed of 100% renewable materials. b. algae is the leading source of biofuels. c. energy processing from corn biofuels is not energy efficient. d. corn is the only source of biofuels.

The correct answer is option C, Energy processing from corn bio-fuels is not energy efficient.

Explanation:

In present scenario, most of the biofuels are being burned to  produce energy by converting its chemical energy into electrical energy. The process through which these biofuels are processed to harness electrical energy through fuel cell is not very efficient. The nations who have excelled in producing energy through biofuels are able to only cater 17% to 19% of their energy needs with bioenergy

ability to bond woth oxygen