D is the only non fragment sentence here, so it must be correct
The correct answer is A.
The human race was not originated in America. The first settlers were nomadic people from the Paleolithic era, who arrived in the continent approximately 15,000 years ago using the Beringia land bridge. This crossing was possible because the sea level had decreased abruptly after the Last Glacial Maximum. Today this piece of land has become the Bearing Strait, separating Siberia (Rusia) and Alaska (US).
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On December 15, 1791, the new United States of America ratified the Bill of Rights, the first ten amendments to the U.S. Constitution, confirming the fundamental rights of its citizens. The First Amendment guarantees freedom
The president who was most responsible for expanding the power of the presidency through the use of executive orders was Andrew Jackson. He dictated twelve executive orders, being the first American president to exceed ten executive orders during his term.
Executive orders are provisions issued by the President of the United States that administer the operations of the executive branch of the federal government.
Executive orders belong to administrative law, but have the force of law only when they are based on the executive powers granted directly to the President of the United States by the Constitution (Article II), or are dictated according to laws of Congress that explicitly delegate to the President a certain degree of discretionary power (delegated legislation).