Remain "active" meaning the applications is running (has a little up arrow under the icon) or is just in the task bar?
If just in the task bar then that is a Mac feature. If you don't want it there then click on the icon, select option and uncheck "keep in dock" - or just click and hold and drag it to the desktop and it will go poof...
Thank you so much Macuser22! The application was just in the task bar.
Your response was spot on! I was also able to remove several other applications this way!
I’m not a very savvy Mac user so really appreciate your help.
Use the top menu bar "Help -> Mac help" for the Dock and other Mac features.