If the surface of the water is at an elevation 0 meters, which person is located at an elevation
of -10 meters?
1-Noa, who is floating on his back in the water 10 meters behind a boat
2-Eleni, who is standing on a pier 10 meters above the surface of the water
3-Jace, who is exploring a cave that is 10 meters below the surface of the water
4-Marcus, who is swimming 10 meters below a bird flying overhead