What scenario best illustrates involuntary manslaughter?

Involuntary manslaughter typically involves an unintentional killing that results from criminal negligence or an unlawful act that does not amount to a felony. In this context, showing a handgun in a movie theater could lead to a situation where panic or an accident occurs, resulting in the unintentional death of another person. This act demonstrates a disregard for public safety and a failure to control one's actions, which aligns with the principles of involuntary manslaughter.

The other scenarios do not fit the definition of involuntary manslaughter. Stealing a wallet represents theft, which is a property crime rather than a violent crime involving death. Punching a sports official after a game and Larry punching Hank leading to serious injury are both instances of assault or battery, but they do not inherently involve the death of another person. Involuntary manslaughter specifically requires that the act leads to fatal consequences, which is not present in those alternative scenarios.