I've seen this question before -- I'm guessing you're working with a chapter on European Renaissance and Reformation that featured a secondary source (source B) reference from historian Steve Ozment. In document A, from a letter to the pope sent by Martin Luther, Luther accused the Roman Catholic Church of having become a den of thieves, that the whole hierarchy needed reform. That early letter (from 1520) supports Ozment's claim that Luther's Reformation movement began as a protest against "arbitrary, self-aggrandizing hierarchical authority" in the church.
A government principle by which the legislative, judicial, and executive powers are essentially held by different groups and people is called the "Separation of Powers," or sometimes a "balance of power," since the goal is to keep any one branch from becoming tyrannical.
The correct answer is C) emotions and feelings.
<em>Modernist authors wrote about emotions and feelings. </em>
In the late 19th century and at the beginning of the 20th century, modernist authors tried to reflect a new style of writing, experimenting with new expressions and forms, completely different than previous authors. They focused on express sensibilities of their time, such as the emotions after World War 1. Friedrich Nietzsche, James Joyce, and Dorothy Richardson were among the important authors of the time.
The volume of miners and industries using copper in the 20th century presented an exponential growth. Mining tends to extract the highest grade resources first, once they are the most profitable. With the intense activity achieved during the last century, the higher grade non renewable sources were quickly depleted, forcing the industry to start exploring lower grades sources to satisfy the demand.
It is also noteworthy that mining copper of higher quality causes more damage to the environment, having its protocols and restrictions consequently addressed by the legislation. Therefore the costs of mining 5% copper might be outweighed by a higher margin of profit from 0.5% copper which also is less damaging to the environment.
