The answer would logically be A.
An oil spill covering an entire ocean has nothing to do with politics.
Nor does C.
B doesn't really contribute much to the question at hand. Sure, he's a politician, but who cares about the large glasses or big ears?
<span>Muhammad was visited by the Archangel Gabriel who was a powerful and loving messenger of God. The first revelation was an event that was to happen in Islam that was going to take place in 610 AD.
</span>
Julius Caesar played a role in the decline of the republic in that he caused a great rift between political leaders, but played a role in the rise in that he greatly inspired the people.
<span>b. spice
</span><span> The product that was commonly traded along the Silk Road were spices. Spices were produced in countries far away from Europe and they were very expensive, both because the production was limited and because the trip to collect them was dangerous. The Silk Road linked Asia and Europe via land for many centuries before the age of Discoveries. </span>