Question

instructions
read the question carefully and select the best answer.
what is the most likely meaning of psi as it is used in the following passage?
the pressure in the no. 1 oxygen tank continued to drift downward; passing 300 psi, now heading toward 200 psi.
a it is most likely a measurement of time.
b it is most likely a type of oxygen.
c it is most likely a location in the spacecraft.
d it is most likely a measurement of pressure.

Explanation:

The passage mentions "pressure" and gives values in "psi", indicating it's a pressure - related measurement. Psi stands for pounds per square inch, a common unit for pressure.

Answer:

D. It is most likely a measurement of pressure.