Which one of the following does not describe one part of the classic Hindu temple ?

In classic Hindu temple architecture, the structural components include:

• Garbhagriha: The innermost sanctum sanctorum where the primary deity is placed.
• Mandapa: A pillared outdoor hall or pavilion used for public rituals and ceremonies.
• Antarala: A small vestibule or antechamber that acts as a transition space between the Garbhagriha and the Mandapa.

Tribhanga is not an architectural part of a temple. It is a specific standing posture used in traditional Indian sculpture and classical dance (notably Odissi). The term refers to a "three-bend" pose where the body is curved at the neck, waist, and knee. While sculptures depicting this pose often adorn temple walls, the term itself describes a figurative stance rather than a structural element.