Which of the following is not a feature of the most popular web browsers?

The While instruction is also called a(n) ___________________ loop because the condition is tested before the loop is repeated.

Fill in the blank(s) with the appropriate word(s).

If you make a mistake while dragging the cropping area and want to start over, you can press the ____ key, which cancels the selection.

a. ESC b. F1 c. ALT d. CTRL