Even if I stop the apache server, I get running.

As you can see in the image, even if you stop only the apache web server, it will run again without permission.

I'm browsing the article online, but I can't determine the cause.

What's going on with the apache web server?

Sorry for the inconvenience, but I would appreciate it if you could reply.

Thank you for your cooperation.

iMac (21.5-inch, Late 2013)