Answer: C)Martin Luther King, Jr. lead a city bus boycott that lasted 381 days.
Explanation:
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The answer is 'colluded', because it means that they schemed to do it secretly. The other options aren't possible here, and most of them are adjectives, and you need a verb.
12 is A
13 is B
14 is B
15 is C
To show the progression of inventions
