Question

Don Walsh and Jacques Piccard:
were the first men to walk on the moon
orbited the earth in a bathyscaph
O explored the deepest known ocean trench
designed the Space Station Mir

Answer 1

The answer would be....

Explored the deepest known ocean trench.

Answer 2

Answer:Explore the deepest known ocean trench and designed submarine for underwater research.

Explanation:Jacques sought financial help from the U.S. Navy, which at that time was exploring various ways of designing submarines for underwater research. ... On 23 January 1960, Piccard and Lt. Don Walsh reached the floor of the Mariana Trench located in the western North Pacific Ocean.