Informal organizations facilitate rapid information dissemination because they lack rigid communication structures. Unlike formal organizations, which depend on established protocols and hierarchies for message flow, informal organizations operate without these constraints, enabling messages to spread quickly and spontaneously. This informal nature supports swift interaction and information exchange that bypasses conventional channels.
Of the provided options, the absence of formal lines of communication is the most accurate explanation for the speed of information travel in informal organizations. This lack of defined pathways allows information to be shared freely and directly, accelerating its circulation among members.