Paragraphs that describe action can increase the reader's awareness to dangerous situations because they naturally try to relate to the situation, thinking "what if that were me" or "what would I do if that happened to me" and then just off of those few thoughts they start to analyze different danger scenarios. Therefore, reader's will automatically begin to be more aware of danger or any other possible threat.
It is answer 4 because the other three are not related to space and even though there are volcanoes on other planet, that question is not as relevant as the other last two.
