The electron configuration of the element chlorine ends in. a. 3s2. b. 3p6. c. 3s23p5. d. 3s23p7.

The correct answer is: d. petroleum

The explanation:

petroleum (also known as crude oil or simply oil) is a fossil fuel that was formed from the remains of ancient marine organisms, Millions of years ago, with the compaction by the pressure and high temperature effect forming oil ex: algae and plants lived in shallow seas. .

Petroleum reservoirs can be found beneath land or the ocean floor.