An architect is interested in estimating the rate of heat loss, ΔQ/Δt, through a sheet of insulating material as a function of the thickness of the sheet. Assuming fixed temperatures on the two faces of the sheet and steady state heat flow, which one of the graphs shown in the figure best represents the rate of heat transfer as a function of the thickness of the insulating sheet? 
Definitions:
Synovial Membrane
A specialized connective tissue that lines the inner surface of capsules of synovial joints and tendon sheath, responsible for producing synovial fluid for lubrication.
Joint
A point where two bones meet in the body, enabling movements and providing support.
Movement
The act or process of moving; changes in position or location.
Connection
The point at which two or more things are joined or the relationship between them.
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