Could be the last three tbh one of those
A parallel sentence mentions the same grammatical expression twice. I would go with "D". 'Passed' and 'Demonstrated' are both past tense words that express the same past tense grammatical idea.
If you have more questions, feel free to ask me.
Pretty sure it's C. while that's what i'd go with, it could be B.
Desperation is a complex mood. i feel like b would be the answer, because she is desperate to get away.
C. conflict. he now has to build a fire and he is delayed