Aquatic organisms that lived hundreds of millions of years ago and were buried in silt and sediment resulted in the formation of
a. coal
b. biomass
c. biofuels
d. petroleum

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.