Question

review the sixth paragraph. timely trip in the relatively new era of human space exploration, astonishing feats seem to come one after another. from the 1950s until the 1970s, the united states and the soviet union sought to best one another in travel and research exploits beyond the earths atmosphere, from orbiting the planet to walking on the moon. today, over five hundred people from roughly forty countries have orbited earth. the international space station, the most elaborate global scientific project in history, is the result of the engineering prowess of five different nations. experts, from astronauts to physicists, are now working toward the next interstellar triumph: sending humans to mars. there are important motivations for this daunting yet essential task: select the evidence that the author provides for the following supporting claim: mars may contain substances that could enhance life for humans on earth. photos indicate that mars has ancient deep - sea thermal vents, so maybe it possesses biological materials that are useful to humans. the pictures taken by robots currently stationed on mars show the fossils of deep - sea organisms that could help cure diseases. blurry photographs of marss topography led to a breakthrough discovery unrelated to the mars mission.

Explanation:

The first option mentions Mars having ancient deep - sea thermal vents and potentially useful biological materials. The second option mentions fossils of deep - sea organisms on Mars that could help cure diseases. Both support the claim that Mars may contain substances to enhance life on Earth. The third option is about a discovery unrelated to the Mars mission's goal of finding substances for Earth's life enhancement.

Answer:

Photos indicate that Mars has ancient deep - sea thermal vents, so maybe it possesses biological materials that are useful to humans.
The pictures taken by robots currently stationed on Mars show the fossils of deep - sea organisms that could help cure diseases.