A naval engineer uses the function, P, to analyze the effects of water pressure on submarines. The function p(d) measures the pressure exerted by water, where represents the depth of water in meters. Which of the following would be a possible domain?
d is the set of all integers.
d is the set of all integers where d>0.
d is the set of all rational numbers.
d is the set of all rational numbers where {0<d< depth of sea floor}.