Select the box that can be formed by folding the given sheet along the lines.

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Let's analyze the options:

(a)

Incorrect Dice because Two opposite side can not be adjacent side.

(b) 

Incorrect Dice because Two opposite side can not be adjacent side.

(c)

According to the given open dice this is Correct Dice 

(d) Incorrect Dice because Two opposite side can not be adjacent side.

Thus, The Correct option is (c)