The answer is B. [Im]perceptible means [not] perceivable, and to perceive is to understand.
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Letter A as it states that it’s effective because it explains what a protest is and why it is important, as in the first paragraph it has that big reasoning .
Answer:
Hans and his mother put a lamp in front of the window to make themselves feel better.
Reagan believes that the institution of the Presidency belong to The people of America.
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Answer:
Will you put the book so I can read it