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In the passage, the two highlighted portions play which of the following roles?
Benovians set their clocks back an hour for the winter. The result is that, during winter`s short days, it is light when most commuters drive to work, but dark when they drive back home. Darkness contributes to accidents. Changing the clocks, however, does not actually increase the amount of driving done in the dark, so it is unlikely to have any effect on Benovia`s automobile accident rate.
Which of the following is an assumption on which the argument relies?
The passage indicates that the small size of Bishop`s body of work contributed to bringing about which of the following?
Which of the following is an assumption on which the argument depends?
Following the United States Civil War (1861-1865), many former slaves in the rural South became sharecroppers (raising a landlord`s crop for a share of the profits) or tenant farmers (selling what they raised and paying a share of the profits as rent). Most historians tend to depict these African Americans as victims of racism and the farm tenancy system. This approach, however, overlooks the role played by such African American rural reformers as Robert Lloyd Smith, founder of the Farmers' Improvement Society of Texas, and Joseph Elward Clayton, the first African American to organize farmers` institutes for the Texas Department of Agriculture, as anti-racists. Both men advocated comfortable homes and better schools for African Americans, both attributed poverty and illiteracy to causes other than racism, such as insect damage to crops, and both worked to keep Black farmers on the land, although Smith opposed farm tenancy system on Black farmers and of accommodating racism. While the extent of these reformers` influence requires more study, their organizations provided a voice for African American farmers seeking to improve their positions in the agrarian South.
Throughout much of the Tertiary period( most of the past 65 million years), the Arctic supported continuous forests. Only toward the end of that period does the fossil evidence show that certain present-day Arctic plants were established and widely distributed throughout the Arctic. Many Arctic plants are thought to have originated in the high mountain ranges of central Asia and North America, to have spread northward to the Arctic as global temperatures fell in the late Tertiary, and to have achieved a circumpolar distribution by the end of the Tertiary(about 2 million years ago). However, fossil evidence to support these proposals is either lacking or fragmentary. Consequently, the routes by which these plants expanded their ranges during their colonization of the Arctic remain unknown.
The context in which it appears, "distributed" most nearly means

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