Option 1: Surendra Nath Banerjee was indeed associated with the Home Rule Movement. This movement aimed to secure self-government within the British Empire for India. It was founded by Annie Besant and Bal Gangadhar Tilak in 1916.

Option 2: Lala Hardayal was not involved in organizing an army in Europe for India`s freedom. He was an Indian nationalist and a key member of the Ghadar Party, which was active in organizing Indians living abroad to fight against British rule.

Option 3: Raja Radhakanta Dev was indeed an opponent of the abolition of the practice of Sati. Sati was a traditional practice where widows would self-immolate on their husband`s funeral pyre. Dev was one of the voices against the British ban on Sati during the 19th century.

Option 4: Sayyid Ahmed Khan is not the founder of the Muslim League in 1906. The Muslim League was indeed founded in 1906, but it was founded by a group of Muslim leaders including Aga Khan III, Nawab Salimullah Khan, and Syed Ameer Ali.

Therefore, the correct answer is option 3, and the other options are incorrectly matched.