Why does apiece of wood float on water while a pin sink in water

Its all relative to the state of the wood

Explanation:

Wood is a material that can be corroded and hollowed out either directly by human cause or by that of weather. Eventually this corrosion will make the density of the wood equal or lighter to that of the body of water, allowing it to float.

for me i cant do homework without music, so, i guess i would say faster with it, than without it. for me at least.

the correct answer would be d.