They are called compound sentences.When 2 sentences are connected.
Actually the answer is D. A is missing a comma. B is too. C shouldn't have a common after the word famous.
Answer:
Some of the task performed by Petroleum engineers include:
O. developing a map of an underground area
O. developing and testing designs for fuel cells
O. designing equipment and processes
Explanation:
Petroleum engineers are those who work in the petroleum sector with the major aim to harness and access the petroleum energy sources towards generating electricity.
<em>For example, a deposit of gases in the ocean or petrol, it is the duty of petroleum engineers to develop equipment and processes on the best method to extract those deposits as well as transport, before refining them for the use as an energy generation material.</em>
