B is the correct sequence.

Statement 1 is correct while statement 2 is incorrect.
In November 1927 (i.e., 2 years before the schedule), the British Government announced the appointment a seven-member statutory commission under the chairmanship of Sir John Simon to report on the condition of India under its new Constitution.
All the members of the commission were British and hence, almost all the parties boycotted the commission with a few exceptions like Justice Party of Madras and Unionist Party in Punjab.

Both the statements are correct.
The Partition of Bengal into two provinces was effected in July 1905.
The new province of Eastern Bengal and Assam included the whole of Assam and the Dacca, Rajshahi and Chittagong divisions of Bengal with headquarters at Dacca. Though Curzon justified his action on administrative lines, partition divided the Hindus and Muslims in Bengal. This led to the anti-partition agitation all over the country.

Both the statements are correct.
Treaty of Salbai was signed between the Marathas and the British East India Company. As per this treaty:
• British acknowledged Madhavrao II Narayan as Peshwa of the Maratha Empire
• British Recognized the Territorial claims of Mahadji Shinde in west of Yamuna River.
• Raghunath Rao was freed and a pension was fixed for them.
• British East India Company got the control of the Salsette.
• British promised to support Marathas in case they attack Hyder Ali of Mysore and retake the territories of Carnatic.

These were some of the early Political Associations that paved the way for organized struggle in India:
• The British Indian Association – 1851
• The Bombay Association — 1852,
• Poona Sarvojanik Sabha—1870
• The Madras Mahajana Sabha—1884