The correct answer is (b), 1826.
The British East India Company first established formal contact with Meghalaya’s Khasi Hills in 1826, after the Anglo-Burmese War. The British were interested in the Khasi Hills because of their strategic location and their potential for trade. The Khasi people were initially resistant to British rule, but they were eventually subdued. The British ruled the Khasi Hills until 1947, when India gained independence.
Option (a), 1765, is incorrect because the British East India Company did not establish formal contact with the Khasi Hills until 1826.
Option (c), 1860, is incorrect because the British East India Company did not establish formal contact with the Khasi Hills until 1826.
Option (d), 1905, is incorrect because the British East India Company did not establish formal contact with the Khasi Hills until 1826.