Answer:
Eye irritation.
Explanation:
There were several types of gases used during WWI (that's what I'm assuming this question is about) but all of them caused severe eye irritation, which would lead soldiers to sometimes take off there gas masks completely and expose the to the gas completely. That's why 85% of deaths in the war were though to be gas related. But instant death could be the other answer just because one of the gasses was particularly lethal and caused many deaths in the war.
<span>Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct response would be the one along the lines of "essential to the advancement of man" since Aristotle was convinced that people uneducated about their choice in government would choose a bad one.</span></span>
C) Father of the U.S. national park system is the phrase which best describes John Muir. John Muir was a Scottish-American author who wrote many books which have been read by millions about his travels around the Sierra Nevada and wilderness areas based around California and the west coast. His writings helped to preserve these areas and the Sierra Club which he founded is a prominent conservation organization.
