Answer:
b.
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Explanation:
We have to find the set of rational number which are arranged from least to greatest.
-3.5,
,2,
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-

-3.5 is least rational number because when we go left side of zero then the number decrease and when we go on right side of zero then the number will increase.Therefore, 2 is greatest rational number .
Option a ,c and d are no true.
Correct arrangement
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Therefore, option b is true.