Which of the following is a supporting statement that could best be added after sentence 4? (4) The U. S. naval ship Relentless was transformed into a research vessel named Gunter by the National Oceanic and Atmospheric Administration.

Modifications to the ship included several labs, as well as a seawater sampling system, and an instrument for measuring surface seawater temperature, salinity, and radiation.

New non-invasive technology has allowed scientists to investigate the ocean without harming the natural environment, such as kelp beds where a variety of animals live.

Scuba, the acronym for self-contained underwater breathing apparatus, makes it possible for divers to stay underwater for longer periods of time and to go deeper than what is possible without it.

Instruments such as satellites provide us with information about weather conditions and coordinates to help researchers navigate through the ocean's vast waters.