I think the answer may be C
One of the many persuasive messages of President Mandela's speech :
“I learned that courage was not the absence of fear, but the triumph over it . The brave man is not he who does not feel afraid, but he who conquers that fear.” He then continued " if you’re afraid; it’s normal, you’re still a brave person. What you need to do next is to conquer that fear by taking action." He attempt to convince people by his technique of persuasion. By anticipating an audience’s questions, He confront the question in their mind. And he answer their question. This connects with people because it builds trust, people see that He understand their view, and makes new space in their mind for his message.
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The answer is B because the text says "teaching rating is close to zero"
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So for years, scientists have been trying to use cloning techniques to make embryonic stem cells that are essentially a genetic match for patients. The idea is that such a close match would prevent their bodies from rejecting the cells. "It's been a holy grail that we've been after for years,"
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