What is the required procedure for selling or transferring a handgun in Ohio?

In Ohio, anyone looking to sell or transfer a handgun is required to go through a background check and transfer process through a licensed firearm dealer. This step is to ensure that the person receiving the handgun is eligible to possess it and has not been prohibited from owning a firearm. Option A is incorrect because even though the state does not have a specific procedure, federal law requires the mentioned background check and transfer. Option B is incorrect because there is no registration process for handguns in Ohio. Option D is incorrect because notification to the Ohio Attorney General's office is only required for private sales through an unlicensed individual, not for transfers through a licensed dealer.