What defines permanent signage?

Permanent signage is defined as a freestanding sign that is designed to be durable and meant to remain in place for an extended period. This type of signage is typically created from materials that can withstand various environmental conditions, ensuring that it can be displayed consistently without needing to be frequently replaced or removed.

The correct choice emphasizes the structural and long-term aspects of permanent signage. This definition aligns well with the characteristics of permanent signage, as it is intended to provide information or identification for an extended duration, thereby serving a vital role in wayfinding and branding.

The other options describe different types of signage that do not fit the definition of permanence. Removable signs are intended for short-term use, electronic signs that change messages frequently are dynamic and not static, and signs that are only visible during certain hours indicate temporary functionality rather than permanence.