The graph that best represents the rate of heat transfer as a function of the thickness of the insulating sheet is
[tex]\frac{dQ}{dt} = \frac{kA(\delta T)}{L}[/tex]
As heat transfer varies inversely as the thickness, then the answer is graph C
N/B; The image of the graphs(options) are attached as a file below
For more information on heat transfer, visit
https://brainly.com/question/16055406