उत्तर : 2. "मुण्डकोपनिषद्"
व्याख्या :

At the right and left ends are the edges of other chakras. Padma of base has been left out. Below the plaque, the sutra of Mundakopanishad 'Satyameva Jayate' is inscribed in Devanagari script, which means - 'Only truth triumphs'.