The correct answer is C: Hydrogen was easier to access than helium.
According to the text, why was hydrogen substituted for helium in the Hindenburg?
A
Hydrogen is a gas, while helium is not
B
Hydrogen floats in air, while helium does not
C
Hydrogen was easier to access than helium
D
Hydrogen is inert, while helium is reactive
1 answer
1 answer