What needs to be fixed?
In the section Two Stock Scenario Quiz Solution, the line "Let's consider stock B now, which has a β of 2.0 and an α of -0.01. A β of 2.0 tells us that for every percentage point the market moves, stock A moves two percent. An α of -0.01 tells us that stock A will move 1% below its movement with the market." is probably meant to refer to stock B when talking about stock A.
What needs to be fixed? In the section Two Stock Scenario Quiz Solution, the line "Let's consider stock B now, which has a β of 2.0 and an α of -0.01. A β of 2.0 tells us that for every percentage point the market moves, stock A moves two percent. An α of -0.01 tells us that stock A will move 1% below its movement with the market." is probably meant to refer to stock B when talking about stock A.