What is a greenhouse system​

A greenhouse also called a glasshouse, or, if with sufficient heating, a hothouse is a structure with walls and roof made chiefly of transparent material, such as glass, in which plants requiring regulated climatic conditions are grown.

Explanation:

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A greenhouse (also called a glasshouse, or, if with sufficient heating, a hothouse) is a structure with walls and roof made chiefly of transparent material, such as glass, in which plants requiring regulated climatic conditions are grown. These structures range in size from small sheds to industrial-sized buildings.

Hope this helps, I think this is what it is!! Sorry if I am wrong. Best of luck to all who needed this answer.

the correct answer is b

a chain link fence because there so tiny even my albino donkey can't get out