The ____ setting, which ranges from 1% to 100%, determines how sensitive the Magnetic Lasso Tool is to edges.

If the value input for START is 8, how many times will the loop steps in instructions corresponding to the following pseudocode be executed?

``` Read START COUNT = START DOUNTIL COUNT < START COUNT = COUNT - 1 Write COUNT ENDDO ``` a) 0 b) 1 c) 8 d) infinite

?A ____ is a pointing device with a ball anchored inside a casing.

A. ?stylus B. ?trackball C. ?touchpad D. ?scroll wheel