Which of these is a part of the biosphere? a. wind b. lakes c. bacteria d. glaciers

The answer is bacteria. Living things are part of the biosphere and bacteria is the only living thing.

B. lakes is a part of the biosphere

Biosphere is defined as " the regions of the surface, atmosphere, and hydrosphere of the earth (or analogous parts of other planets) occupied by living organisms." and a lake is the only thing on the list that could be occupied by a living thing.