After the resignation of Tamilisai Soundararajan as the Governor of Telangana, C. P. Radha Krishnan was appointed to discharge the functions of the Governor.
C. P. Radha Krishnan, who was the Governor of another state at the time, was given additional charge of Telangana to ensure the continuity of constitutional functions and smooth governance until a new full-time Governor was appointed.
Such arrangements are common in India, where a sitting Governor may be given temporary responsibility for another state in case of vacancies.
Conclusion:
The correct answer is C. P. Radha Krishnan, who took charge after Tamilisai Soundararajan’s resignation.