The correct answer is:  [C]:  " 1/4 " .
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Explanation:
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(-3/8) + (5/8) = (-3 + 5) / 8 = 2/8 ; 
→ 2/8 = (2÷2) / (8÷2) = 1/4 ;  → which is:  Answer choice:  [C]:  " 1/4" .
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