Final answer:
Pratt's view on isostasy pertains to the idea that the Earth's crust achieves equilibrium by varying in density according to the elevation of different areas on the Earth's surface.
Step-by-step explanation:
Pratt's view on isostasy relates to the geological concept that Earth's lithosphere floats upon the semi-fluid asthenosphere beneath it. Pratt proposed one explanation for isostasy, suggesting that variations in elevation on the Earth's surface are compensated for by changes in the density of the underlying crust. Areas of higher elevation have less dense crust, whereas areas of lower elevation have denser crust, allowing for balance, or isostasy, to be maintained.