Fortunately, the Code ____ panel makes it simple for beginning programmers to use ActionScript 3.0.

To add number to sum, you write (Note: Java is case-sensitive)

a. number += sum; b. number = sum + number; c. sum = Number + sum; d. sum += number; e. sum = sum + number;

_____ allows you to click at the beginning and end of text that you want to highlight instead of holding the mouse button down while dragging over the text.

A. ClickLock B. SelectLock C. TextLock D. HighlightLock