Question

one common event that a user generates for an event - driven program is ______.
a. a mouse over, where the user places the mouse pointer over an area on the screen
b. a key press, where the user presses the left mouse button
c. a swipe, where the user drags across the screen with two fingers, moving them slightly apart
d. a zoom, where the user quickly drags one finger across the screen from left to right.
item key
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Explanation:

• Option a: A "mouse over" event is when the mouse pointer is placed over an area on the screen, which is a common user - generated event in event - driven programs.
• Option b: A key press is related to the keyboard, not the mouse. Pressing the left mouse button is a "mouse click" event, not a key press. So this option is incorrect.
• Option c: A "swipe" with two fingers moving slightly apart is more of a gesture for zooming (in some interfaces), but the description of this option does not match the typical definition of a "swipe" event. Also, it is not as common a basic event as "mouse over" in general event - driven programming (especially when considering traditional desktop - based event - driven programs with mice).
• Option d: The description of a "zoom" event here is incorrect. A quick drag of one finger from left to right is more like a "swipe" event, and zooming is usually associated with pinching or spreading fingers (or using a scroll wheel/keyboard shortcuts in some cases).

Answer:

a. a mouse over, where the user places the mouse pointer over an area on the screen