Final answer:
The correct answer is option C. 72 meters below the sea level. After diving 99 meters below sea level, a diver rises at a rate of 3 meters per minute for 9 minutes. So, the diver is 72 meters below sea level.
Step-by-step explanation:
The diver initially dives 99 meters below sea level. After that, the diver rises at a rate of 3 meters per minute for 9 minutes. To find the final position of the diver, we can subtract the ascent distance from the initial depth. So, the final position of the diver is 99 - (3 * 9) = 99 - 27 = 72 meters below sea level. Therefore, the answer is option C: 72 meters below the sea level.