1. PART A: Which of the following best describes the author's main claim in the text
O A Water scarcity is not something that humans have
any control over, as it is caused by natural events,
B Humans can reverse the damage they have inflicted
on the Earth's water supplies if they reduce their
pollution output
C Widespread water scarcity threatens the right that
all humans should have to access dean drinking
water, as it is essential to live,
D Water scarcity is an issue primarily caused by
humans that needs to be addressed by humans.

Benzonitrile (c6h5cn) is reduced to two different products depending on the reducing agent used. treatment with lithium aluminum hydride followed by water forms k, which has a molecular ion in its mass spectrum at 107 and the following ir absorptions: 3373, 3290, 3062, 2920, and 1600 cm-1. treatment with a milder reducing agent forms l, which has a molecular ion in its mass spectrum at 106 and the following ir absorptions: 3086, 2850, 2820, 2736, 1703, and 1600 cm-1. l shows fragments in its mass spectrum at m/z = 105 and 77. propose structures for k and l and choose an explanation for how this could be concluded.