The answer is B because it can be easily shortened down/ make more sense without the commas to: I heard in the weather report that it's going to rain.
By giving a speech in an American University, in April 1965.
Asteroids offer a source of volatiles and an extraordinarily rich supply of minerals that can be exploited for the exploration and colonization of our solar system in the twenty-first century. Asteroids represent the bits and pieces left over from the process that formed the inner planets, including Earth.
Answer:
If we value education as much as we claim, we should put our money where our mouth is and raise teachers’ salaries.
Increasing teacher salaries might attract more competent individuals to the profession.
Perhaps more teachers would continue to teach, rather than leave the field, if their salaries were higher.
Explanation:
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It meant war with Britain and America wouldn't have the support of Britain like it did as a colony.