whom did Lord rama gave sahapa vimochana by touching with his legs

In the Ramayana, Ahalya was cursed to become a stone and was liberated when Rama's foot accidentally touched her while he was walking with Vishwamitra. This act is called 'sahapa vimochana' (salvation by touch). The other options are wrong: Kaikeyi was Bharata's mother and the cause of Rama's exile, Mandodari was Ravana's wife, and Surpanaka was the demoness whose disfigurement led to Sita's kidnapping.