The question regards vapor pressure's relationship with temperature, pressure, and boiling point. In the provided solution, they give reason as to why a change in elevation (atmospheric pressure) does not lead to significant change in vapor pressure yet does lead to a significant change in boiling point. Later, they discuss the correct answer and suggest that a lower boiling point increases vapor pressure.. Is this not a contradiction? Which is true? Thanks! EDIT: The correct answer is a comparison between two liquids. Maybe they are suggesting that you are able to compare two different liquids' boiling points to determine vapor pressure, but you cannot compare the same liquid's change in boiling point due to elevation and relate that change to its change in vapor pressure. I don't know?