Water leaves a lake through the ground. "Ground water is recharged from rain water and snowmelt or from water that leaks through the bottom of some lakes and rivers," - Google
Sorry if my answer was incorrect.
I believe the answer is B. I think it's B because I just studied this subject in school and it sounds best
Tokyo is the largest city in the world.
<span>condensation to form liquid water, which then rained back down to form the oceans</span>