Which code should be communicated to indicate that the museum is open?

The phrase "Torch is Lit" is a widely recognized code used in various organizations, particularly museums, to signify that the establishment is open for visitors. This metaphorical expression conjures the image of a welcoming atmosphere, reminiscent of the traditional practice where lighting a torch indicated readiness and hospitality. As such, the communication of this specific code conveys to staff and visitors alike that the museum is accessible, creating an inviting environment for exploration and learning.

On the other hand, the remaining options, while they may have distinct meanings within different contexts, do not pertain to an indication of the museum's operational status. "Code Blue" typically refers to a medical emergency, while "Code Green" often signals a general notification of safety or all-clear in various facilities. "Village is Full" suggests a situation of capacity or limitation, which is not relevant in the context of communicating that a venue is open. Hence, "Torch is Lit" correctly points to the museum being open and ready for guests.