The answer is that it is b because
"<span>All of the major powers considered war to be part of a valid foreign policy" is the best option, but it should be noted that militarism was a consequence of nationalism. </span>
Answer:
this answer may help you.
The answer would be youthful, because the WW1 had just happened so people adresses life with a very relaxed attitude because so many people had died they realised how short life is and became more promiscuous in their day to day activities
