The main energy resource used by industrialized countries is

B. Fossil fuels

Explanation:

if these are the options:

A. Solar energy

B. Fossil fuels

C. Hydroelectric power

D. Wind power

Modern civilization owe a great deal to efficient use of fossil fuels derived from geologic formations. These fossil fuels provided the energy to power the industrial revolution and usher in the new life. Internal combustion engines runs on the use of fossil fuels that abounds all around. Automobiles, power plants, industrial machinery, relies on fossil fuels to generate significant amount of energy to drive these technologies to work.

The fossil fuels that are of high interest are the gasoline and coal. Both have been extracted naturally for use by man.