Which of the following crimes falls under "homicide" in Title 18?

Homicide, as defined in Title 18 of Pennsylvania law, specifically refers to the unlawful killing of another person. Among the choices provided, murder is categorized under homicide because it involves intentionally causing the death of another individual, which can occur in various degrees depending on the intent, premeditation, and circumstances of the act. The legal definitions and distinctions drawn within homicide encompass different forms, including murder, manslaughter, and more, making it a broad and serious offense carrying significant penalties.

In contrast, arson, kidnapping, and theft do not pertain to the unlawful killing of another person and fall under different sections of the law governing various criminal behaviors unrelated to homicide. Arson involves the willful destruction of property through fire, kidnapping pertains to unlawfully seizing and carrying away a person by force or fraud, and theft involves unlawfully taking someone else's property with the intent to permanently deprive them of it. Each of these offenses has its own specific legal framework and does not relate to the act of taking a life, which is the core component of homicide.