A nail is inserted in the trunk of a tree at a height of 1 m from the ground level. After 3 years, the nail will

a) move downwards b) move upwards c)remain at the same position d)move sideways

The nail will remain at the same position as the height of the tree increases from top, not from bottom. 

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remain in the same position 

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ri8 @rutuvarale............

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