By 2050, the Earth's population will likely have swelled from seven to nine billion people. To fill all those stomachs - while accounting for shifting consumption patterns, climate change, and a finite amount of arable land and potable water - some experts say food production will have to double. How can we make the numbers add up? Experts say higher yielding crop varieties and more efficient farming methods will be crucial. So will waste reduction. Experts urge cities to reclaim nutrients and water from waste streams and preserve farmland. Poor countries, they say, can improve crop storage and packaging and rich nations could cut back on resource-intensive foods like meat.

Which one of the following statements best sums up the above passage?

Human history abounds in claims and theories confining the right of governing to a few select citizens. Exclusion of the many is justified on the ground that human beings may be rightfully segregated for the good of society and viability of the political process.

Which one of the following statements is least essential as a part of the argument in the above passage?

"By liberty I mean the eager maintenance of that atmosphere in which men have the opportunity to be their best selves."

Which one of the following expresses the view implied in the above statement?

The mangroves can shed tons of leaves per acre every year; fungi and bacteria break down this leaf litter and consume it, they then are consumed by tiny worms and crustaceans, which in turn feed small fish, which feed larger fish and birds and crocodiles.

Which among the following is the most logical inference of the above statement?

 If A runs less fast than B, and B runs as fast but not faster than C; then, as compared to A, C runs

 With reference to the above passage, the following assumptions have been made:

1.Higher economic growth is essential to ensure reduction in economic disparity. 
2.Environmental degradation is sometimes a consequence of economic growth

Which of the above assumption/assumptions?