What is the term for a sentence that usually comes at the beginning of a paragraph and states the main idea?

Because genetics is now progressing so rapidly, it is revolutionizing medical research. identify the subordinate clause in the sentence. a) is now progressing b) is now progressing so rapidly c) it is revolutionizing medical research d)

Which quotation best expresses a major theme of this speech? "i saw my evil day at hand. the sun rose dim on us in theo morning, and at night is sunk in a dark cloud, and looked likea ball of fire.""i am much grieved, for i expected, if i did not defeat you, too hold out much longer, and give you more trouble before ! surrendered."m"we went to our great father. we were encouraged. hiso great council gave us fair words and big promises, but wegot no satisfaction.".**we told them to let us alone; but they followed on andbeset our paths, and they coiled themselves among us likethe snake."

Read the excerpt from "the love song of j. alfred prufrock." and indeed there will be time to wonder, “do i dare? ” and, “do i dare? ” time to turn back and descend the stair, with a bald spot in the middle of my hair— [they will say: “how his hair is growing thin! ”] my morning coat, my collar mounting firmly to the chin, my necktie rich and modest, but asserted by a simple pin— [they will say: “but how his arms and legs are thin! ”] do i dare disturb the universe? in a minute there is time for decisions and revisions which a minute will reverse. which lines indicate that the speaker is concerned about what others think of him?