Which one of these weapons do law enforcers use? Is it a stun gun, a rifle or a revolver hand gun?

Yes. And also no.

And what I mean be that is that most law enforcement carries stun guns (well...tasers), have rifles in the squad car, and have sidearms (sometimes revolvers, usually autos though). So all of the above.

But on the other hand, if you want to get technical, a stun gun is not a taser, their rifles are usually not "carried", and revolvers are a specific subset of handguns that are not often carried any more (usually autos)...so no on all the above.

English isn't your first language, is it?

Look fu©kstick, here's how it goes.

Cops carry a lot of sh!t on their belts. Most of them are weapons, some of 'em aren't.

Of your selections, that I can decipher after you've effectively mangled the English Language, I see...

"Revolver Hand Gun" -- No, not since the 1980's. Cops carry autos, unless they're old school, still on the force, and have the pull to be able to carry their same department-issued duty weapon back when the department issued revolvers. NYPD, I'm lookin' at you here, boys...

A rifle? We don't carry rifles, but nowadays we've got patrol rifles in our trunks or up front where the shotguns used to be. Times have changed. Not all agencies like patrol rifles, and some agencies require special (read: SWAT or Buddy-Buddy with the LT) certification/training to carry a patrol rifle instead of the standard police shotgun.

Police don't carry "stun guns" -- a stun gun is a stupid little electro-zapper thing you buy for 39.95 that imparts "a million volts" between two electrodes. That's one of those bullsh!t "self defense products" marketed to weak-minded idiots who can't get over the fact that the world is a dangerous fu©king place and there are people out there who do not give a fu©k about them enough to want to kill them over something stupid like their shoes and they don't realize that they may in fact need to take someone's life in order to keep theirs. Cops don't carry stupid sh!t like that. Cops carry Tasers.

A Taser shoots darts on thin wires, which penetrate the target body, and then apply pulsating voltage at a specific frequency in order to disrupt the electrical processes in the body. It's painful and reasonably effective at getting the attention of all but the most hardened of dirtbags.

Cops also carry a chemical spray. Years ago, we called it "Mace" and was usually CS tear gas in solution. Nowadays, it's "Pepper spray" which uses as its active ingredient Oleoresin Capsicum, which delightfully dries out your mucous membranes, causing your body to go into overdrive, making you a crying, near-blind, choking, snot-making machine.

It's fun to watch.

Cops also carry batons, which is just a fancy name for a "bonky stick." We use it as a less-than-lethal attention getting device. Some of us still prefer the old PR-24, whereas some departments got dragged kicking and screaming into the 20th century and issued ASP's or other expandable steel (or alloy, if you're a weak-wristed Fed) baton as an...oh, what's the politically correct term? "Intermediate impact weapon."

Bullsh!t, it's a fu©king thump stick. Years ago, cops made no bones about what their tools were. They carried saps, hickory or rock maple hardwood nightsticks or truncheons, and they were not shy about using them. People behaved themselves back then.

Not like now. Now cops have to be nice. So they carry a whole bunch of politically correct sh!t on their belts in order to placate the useless @ssholes the cops protect, who have no clue what a cop has to go through to do his job, and then dictate how the cop does it.

A cop's duty belt usually has: Firearm, Spare ammo, Cuffs, Spray, Stick, Taser, Radio, Flashlight, Cell phone pouch, Glove pouch, and the fu©king keys to the batmobile.

I hope I have answered this question to your satisfaction.

Now go lick a Stun Gun.

It's a 40 watt Plasma phaser rifle which doubles as a margarita blender

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When people dine out - do they use a knife, a fork, or a spoon?

Shame you didn't list all of the above as an option..... because that is the answer.

They can use all of them. Depends on the duty & circumstances.

Answer ?....all of the above....