The correct answer is: B. 11th
The 11th Amendment to the Constitution of India, enacted in 1966, provided for the formation of the state of Haryana. The amendment was passed by the Parliament of India on 1 November 1966 and came into effect on 1 November 1966.
The amendment bifurcated the state of Punjab into two states, Haryana and Punjab. The new state of Haryana was formed with the following districts: Ambala, Faridabad, Gurgaon, Hisar, Mahendragarh, Rohtak, Sirsa, and Sonepat. The new state of Punjab was formed with the following districts: Amritsar, Bhatinda, Ferozepur, Jalandhar, Kapurthala, Ludhiana, Malerkotla, Mansa, Patiala, and Sangrur.
The 11th Amendment also provided for the transfer of certain assets and liabilities from the state of Punjab to the state of Haryana. The amendment also provided for the appointment of a Chief Commissioner for the new state of Haryana.
The 11th Amendment was a significant step in the history of India. It marked the creation of a new state, Haryana, and it also led to the reorganization of the state of Punjab. The amendment was welcomed by the people of Haryana, who had long been demanding a separate state for themselves. The amendment also helped to improve the relations between the states of Haryana and Punjab.
The other options are incorrect because they do not refer to the 11th Amendment to the Constitution of India. The 7th Amendment, enacted in 1956, provided for the reorganization of the states of India. The 15th Amendment, enacted in 1963, provided for the introduction of adult franchise in India. The 18th Amendment, enacted in 2019, provided for the abrogation of Article 370 of the Constitution of India, which granted special status to the state of Jammu and Kashmir.