Answer: Option (3)
Explanation: Oil spill refers to the leakage of the liquid petroleum hydrocarbons in the ocean, thereby polluting the marine ecosystem.
In the given figure, the affected areas are being shown, of which the maximum deep-water horizon spill is in the year 2010 and is the severe one.
Due to this oil spill, the biodiversity in the gulf of mexico is highly affected. It affected the corals that are located at deep sea. In addition to that, it has made thousands of marine organisms difficult to live due to the leakage of methane, hydro carbons and petroleum products.
Thus the correct answer is option (3).