The civil disobedience movement was led in the north-west frontier province by :
(A)Sheikh Mohammad Abdullah
(B)Khan Abdul Ghaffar Khan
(C)Dr. M.A.Ansari
(D)Sewa Singh Thikirwala

Hint: He was Gandhi's most faithful follower and was called Frontier Gandhi. The Khudai Khidmatgars ("Servants of God") movement, led by one of the options, organised nonviolently to oppose the British in the Northwest Frontier Province of India in 1929.

Complete answer:
The civil disobedience movement was led in the north-west frontier province by Khan Abdul Ghaffar khan
For Ghaffar Khan and the Pakhtuns he led, the defining moment was the Civil Disobedience Campaign of 1930. By then the Khudai Khidmatgar, or Servants of God, had already been raised by Ghaffar Khan. It was appropriate to take an oath to become a Khudai Khidmatgar that included these words: "I will never use violence, I will not retaliate or take vengeance, and I will forgive anyone who indulges in oppression and excess against me."

Now let’s see options :
(A) Sheikh Mohammad Abdullah: Sheikh Muhammad Abdullah, Lion of Kashmir, a prominent figure in the struggle for independence from British rule in India, who fought for the rights of the Kashmir region and obtained semi-autonomous status within independent India for Jammu and Kashmir state. Thus this is the wrong option.
(B) Khan Abdul Ghaffar Khan: The civil disobedience movement was led in the north-west frontier province by Khan Abdul Ghaffar Khan. Thus this is the right answer.
(C) Dr M.A Ansari: Mukhtar Ahmed Ansari was an Indian nationalist and political activist and during the Indian Independence Movement, was the former president of the Indian National Congress and the Muslim League. Thus, this is the wrong answer.
(D) Sewa Singh Thikirwala: Sewa Singh Thikriwala in Patiala, a former princely state, was a leader of the Praja Mandal movement. During the reign of Maharaja Bhupinder Singh of Patiala, he was the President of the Riyasat Prajamandal Party. Thus, this is the wrong answer.

Note: In the history of India's freedom movement, the Champaran Satyagraha is considered to be a critical incident. It was the first civil disobedience campaign initiated by Mahatma Gandhi in India to protest against the injustice committed to tenant farmers in the Biharan district of Champaran.