Step 1: What isostatic rebound is.
During the Ice Age thick glaciers pressed the crust down. When the ice melted, the freed land slowly rose back up. This slow rise is the rebound.
Step 2: What rising land does to the coast.
As Scandinavia lifted, old shorelines were carried up above the present sea level. These lifted shore terraces are called raised beaches.
Step 3: Match to the option.
Raised beaches are the clear, well known sign of rebound, so that option fits.
Step 4: Reject the others.
Lake level changes are minor and local, and deep earthquakes do not come from rebound, which causes only shallow adjustments. So those do not fit.
Step 5: Final choice.
So the result of the rebound is raised beaches.
\[ \boxed{\text{Raised beaches}} \]