Why was he amused by this idea?

Who was Napoleon Bonaparte? Why was he called a “liberator?

Simranjit studies in tenth class in a school. There are fifty students in his class. Most of the students come to the school by separate cars driven by their parents and also go back by separate cars. One day their science teacher was teaching the chapter on sources of energy. He told the students that the fossil fuels are limited in nature and we should make efforts to conserve them by reducing their consumption. Hearing this, an idea came to Simranjit's mind which he shared with the three classmates who live in the same area. All these students liked the idea. These students talked to their parents, and even the idea mooted by Simranjit ? (a) What could be the idea mooted by Simranjit ? (b) Why was this idea mooted ? (c) How did this idea help the environment ? (d) How did this idea help the individual parents ? (e) What values are displayed by Simranjit in mooting this idea ?