Question

instructions
read the question carefully and select the best answer.
what mainly alerted crew to the fact that an oxygen tank had exploded?
a. they heard a sharp bang and a vibration.
b. there were water droplets on the walls, ceiling and floor.
c. they saw the fuel leaking out of the spacecraft.
d. the tank reached 200 psi.

Explanation:

An oxygen - tank explosion would typically be accompanied by a sharp bang and vibration, which are clear and immediate indicators. Water droplets on walls etc. are not typical signs of an oxygen - tank explosion. Fuel leakage is related to fuel systems, not oxygen tanks. A tank reaching a certain pressure is not the same as an explosion.

Answer:

A. They heard a sharp bang and a vibration.