Final answer:
Factory owners are considered part of the bourgeoisie in communist theory as they own the means of production, unlike the other options which typically fall into the proletariat class.
Step-by-step explanation:
According to communist theory, particularly the writings of Karl Marx, the bourgeoisie is defined as the social class that owns the means of production. The bourgeoisie are traditionally business owners, industrialists, and professionals who profit from commerce, administration, and the exploitation of labor. In relation to the options provided, Factory owners would be considered part of the bourgeoisie as they own the means of production and are in a position to employ workers, who are part of the proletariat, to operate these factories. The trashman, peasants, and skilled craftsmen are more likely to be considered part of the proletariat, as they typically do not own means of production and sell their labor to earn a living.