The Mountbatten plan did not envisage the inclusion of the …………………………….. province in Indian dominion.
a. Bihar
b. Sind
c. Madras
d. Bombay

Hint:
Mountbatten plan is a statement by the British Government dated June 3, 1947, regulating the division of India into two states where property rights were granted. The princes had the right to join one of the two dominations or to maintain their previous relationship with Great Britain.

Complete step by step solution:
Lord Mountbatten came to India as the last Viceroy and was tasked with a swift transfer of power by the then British Prime Minister, Clement Atlee. In May 1947, Mountbatten put forward a plan that would allow the provinces to be declared independent successor states and then decide whether to join the Constituent Assembly or not. This plan is called the Dickie Bird Plan. When Jawaharlal Nehru (born November 14, 1889) learned of the plan, he vehemently rejected it, saying it would lead to the Balkanization of the country. Therefore, this plan is also called the Balkan Plan.
Provisions of Mountbatten plan: British India was to be divided into two dominions - India and Pakistan. The constitution drafted by the Constituent Assembly will not apply to Muslim-majority areas (as it will become Pakistan). The question of separate constituent assemblies for Muslim-majority areas is decided by these provinces. India became independent on 15 August 1947 and Pakistan was established as a new Dominion on 14 August 1947. East Bengal, West Punjab, Sind and Baluchistan Provinces from the High Commissioner belonged to Pakistan.
Hence, the correct answer is option B.

Note:
A princely state is a state with a local ruler who has entered into a contractual relationship with Britain. Prince states like Jammu and Kashmir have the option of joining India or Pakistan. The consequences of this choice will affect new states in the coming decades.