What percentage of the human body is water?

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Up to 60% of the human adult body is water. According to H.H. Mitchell, Journal of Biological Chemistry 158, the brain and heart are composed of 73% water, and the lungs are about 83% water. The skin contains 64% water, muscles and kidneys are 79%, and even the bones are watery: 31%.

70%

Me talking to myself

Me: why don't I have gf

Brain : Just open front camera

(After opening front camera )

Me : Ok thanks ..I understand ..

(still crying in the corner )

Explanation:

If have sense of humour ,then this joke will surely makes you to laugh...

answer; i believe that the correct answer is (a) restriction);