Question

What benefit do offshore oil rigs have on the environment?

Answer 1

The correct answer is "The oil removed by this structure can be used to power ships."
Oil rigs are positive, effective and direct methods of recovering crude oil. It is a large construction on or in water with facilities to drill wells, to extract and process oil and natural gas, and to temporarily store product until it can be brought to shore for clearing and retailing.

Answer 2

The benefit  that offshore oil rigs have on the environment is that The oil removed by this structure can be used to power ships. This is a positive effect on the environment because those oils are used in order for the ships to sail across the ocean.