D. The streamers were red gashes cut across the sky.
A=1. B=2,3
I chose these answers as the fit the best in that question.
Answer:
The oxygen bottles reveal that the climb up Mount Everest is so difficult that climbers cannot carry their equipment back down the mountain.
Explanation:
The partially used bottles imply that climbers can reach high altitudes without the use of oxygen.
Answer:
Letter D, Support your thesis.
Explanation:
It is not Answer A. We are discussing a certain topic and we should provide evidence to support our stand, not against their stand, therefore, making it an argument, which we are not doing as of that period.
It is not Answer B. We are currently focusing on proving our stand strongly in the discussion and not trying to make our part more interesting, we are proving it, and the best way to do that is with evidence.
It is not Answer C. True and correct evidence is always facts, not opinions.
It is Answer D. it is the closest right answer here, we are supporting what we are saying with factual and correct evidence like what answer D said, further proving our stand, or in other words, supporting our thesis, therefore it is the correct answer.
Correct me if I am wrong and Thank you!