Of the following fuels used on a large scale in the last century to supply energy, which began to be utilized most recently?
a. Coal
b. Crude oil
c. Fuelwood
d. Nuclear energy
Coal is the fuel that is being used on a large scale in the last century to supply energy, which began to be utilized most recently. Before coal are used to run a train and steam engines. Coal are used to cook foods and there are other things.
