Which of the following charges involves the unlawful taking of a person against their will?

The charge that involves the unlawful taking of a person against their will is kidnapping. This offense specifically entails seizing and carrying away a person by force or fraud, which violates the person's freedom of movement and autonomy. Kidnapping can involve a variety of scenarios, such as abducting someone for ransom, committing another crime, or holding the individual against their will.

Robbery, while similarly involving the unlawful taking of property through force or intimidation, does not pertain directly to the unlawful taking of a person. Murder involves the unlawful killing of another individual, which is a different crime entirely. Possession of a controlled substance relates to the illegal holding of substances regulated by law and does not involve any aspect of taking a person against their will. Thus, kidnapping is unequivocally the charge that fits the description provided in the question.