The correct answer is (a) Moti Ram Shah.
Moti Ram Shah was a banker and moneylender who played an important role in the settlement of Nainital by advancing loans to the Britishers. He was born in a village near Nainital in 1770 and started his career as a small trader. He soon became a successful banker and moneylender, and his business extended to many parts of Kumaon. He was a close friend of the British Resident in Kumaon, and he used his influence to help the British settle in Nainital. He also donated land for the construction of the first church in Nainital.
Edward Gardner was a British officer who served in the Indian Army. He was born in 1780 and died in 1849. He was not involved in the settlement of Nainital.
George William Trail was a British officer who served in the Indian Army. He was born in 1783 and died in 1862. He was not involved in the settlement of Nainital.
Fazhlul Haq was a Bengali politician who served as the Prime Minister of Bengal from 1937 to 1943. He was not involved in the settlement of Nainital.