Concept:The centralized portal ‘e-Samadhan’ is linked to the higher education regulator that handles student and staff grievances.Explanation:The University Grants Commission (UGC) is the governing body that announced the launch of the ‘e-Samadhan’ portal.This portal is designed to monitor and resolve grievances of students and staff in universities.UGC is the higher education sector regulator in India.Therefore, the correct option is Option A.Answer:Option A: University Grants Commission