Which of the following statements is true? the challenger deep was explored by picard and walsh. data from jason-1 will scientists study deep sea life. salinity refers to the amount of salt (nacl) in the ocean. all of the above. none of the above.

In this case, all these statements are true. Salinity is the salt in the water. Jacques Piccard and Lt. on Walsh were the first people to explore the deepest part of the worlds ocean known as the Mariana Trench in The Challenger Deep, and Jason 1 is a satellite released by NASA to monitor world ocean circulation and study the way the atmosphere and ocean interact with each other to improve the predictions for the climate when it comes to major weather events like El Nino.