The answer is B because it doesn't have any commas and it wouldn't make sense without it. Looks like you got it correct.
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Answer: They indicate that Nixon had plans for domestic and international improvements.
Explanation:
On August 8, 1968, in his acceptance speech at the Republican convention in Miami Beach, Florida, Nixon shared his enthusiasm that the hostility with the Soviet Union will be eased. In this particular excerpt, he claims that the<em> "era of negotiation"</em> begins. This indicates that Nixon strove for domestic, but also international improvements. He wanted to improve the United States' foreign relations.
Answer : Option C) The scarlet letter is an important American novel, and is written by Nathaniel Hawthrone.
Explanation : An example of faulty co-ordination, is this sentence -
The scarlet letter is an important American novel, and is written by Nathaniel Hawthrone.
As per the definition of faulty coordination, it is sentence when we join two clauses in such a way that the meaning becomes illogical.
This is seen in this above sentence. The correct way will be :
The scarlet letter written by Nathaniel Hawthrone, is an important American Novel.