Final answer:
The building official is legally obliged to examine buildings, structures, and sites before issuing a permit. This mandated step ensures safety and legal compliance.
Step-by-step explanation:
Before issuing a permit, the building official is legally obliged to examine or cause to be examined buildings, structures, and sites for which an application has been filed. The correct answer to the question is 2) Legally obliged. This requirement is mandated to ensure the safety, compliance with building codes, and adherence to zoning laws. It is a critical step in the building permit process to avoid future legal and structural issues.