John lived in a small island surrounded by flowing liquid H2O  Where might he live?\nOptions:\n- japan\n- hawaii\n- mississippi river\n- pacific ocean\n- body of water
A step-by-step solution is:
mississippi river
The Mississippi river is the second longest river and chief river of the second largest drainage system on the north American continent.

John lived in a small island surrounded by flowing liquid H2O.

He might live in island surrounded by Mississippi river.

.

So, the answer is mississippi river