C, the answer is C.. trust me
this can be solve using the formulaP = rghwhere P is the total pressurer is the densityh is the heightg is the acceleration due to gravity
fist solve the total pressureP = 1.5 bar + 1 barP = 2.5 barP = 250,000 Pa
P = rgh250,000 = (997)(9.81)hh =25.56 m
Area i would pack probably water and good and my phone and the main things you need to survive would be good and water and a shelter
The length of ND = 3 units
The length of N'D' = 6
6 / 3 = 2
The scale factor is 2