Lucknow was represented by whom after the death of Nawab Wajid Ali Shah:

Birjis Qadr

The correct answer is Option (3) → Birjis Qadr

Lucknow was represented by  Birjis Qadr after the death of Nawab Wajid Ali Shah.

Revolt of 1857:

In Kanpur, the sepoys and the people of the town gave Nana Sahib, the successor to Peshwa Baji Rao II, no choice save to join the revolt as their leader. In Jhansi, the rani, Rani Lakshmi Bai was forced by the popular pressure around her to assume the leadership of the uprising. So was Kunwar Singh, a local zamindar in Arrah in Bihar. In Awadh, where the displacement of the popular Nawab Wajid Ali Shah and the annexation of the state were still very fresh in the memory of the people, the populace in Lucknow celebrated the fall of British rule by hailing Birjis Qadr, the young son of the Nawab, as their leader.