Question

pollution from oil spills on the black sea contaminate this country’s water supply: israel, iran, turkey, saudi arabia

Explanation:

To solve this, we analyze the geographical location: The Black Sea is bordered by Turkey. Oil spills in the Black Sea would impact countries adjacent to it. Israel, Iran, and Saudi Arabia are not bordering the Black Sea, while Turkey is. So the country whose water supply is contaminated by Black Sea oil spills is Turkey.

Answer:

C. Turkey (assuming options are labeled A: Israel, B: Iran, C: Turkey, D: Saudi Arabia; if not labeled, the third option with "Turkey")