What record did the nereus break in may 2009? a. it became the first remote operated deep-sea robot. b. it dove to a depth of 6.8 miles. c. it explored an undersea mountain. d. it took the first videos of deep sea organisms.

On May 31, 2009, a team of engineers at Woods Hole Oceanographic Institution (WHOI) celebrated as the unique vehicle called Nereus dove to 10,902 meters (6.8 miles) in the western Pacific Ocean’s Mariana Trench.
A) It became the first remote operated deep-sea robot
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