Windows Taskbar Button Appearance

What indicator does an open application's Windows taskbar button have?

a. 3-D appearance.

b. yellow glow around it.

c. colored line under it.

d. black box around it.

Answer: c. colored line under it.

The taskbar button of an open application is typically indicated by a colored line underneath it. This colored line helps distinguish the active or open application from other inactive or closed applications on the taskbar. The purpose of this colored line is to provide a visual cue to the user, making it easier to identify and switch between different open applications.

Having a colored line under the taskbar button of an open application is a useful design element in Windows interface, enhancing user experience and productivity. It's a simple yet effective way to visually communicate which applications are active and which ones are not at a glance.

Next time you're navigating through multiple open applications in Windows, pay attention to the colored lines under the taskbar buttons to quickly identify the active windows.