Respuesta :

transitionstate
Answer:
            Option-D (Piece of Wood) is the correct answer.

Explanation:
                   Density is related to mass and volume as,

                             Density  =  Mass / Volume
For Wood,
                             Density  =  42.5 / 50

                             Density  =  0.85

You can calculate remaining densities by yourself. Among all the density of Piece of Wood is the least.

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