The correct answer is option 4, Kushinagar. Kushinagar is the place where Lord Buddha took his last breath. It is an important pilgrimage site for Buddhists as it marks the site of Buddha`s Mahaparinirvana, which is the final stage of liberation in Buddhism. Kushinagar is located in the state of Uttar Pradesh, India.

Option 1, Rajgir, is incorrect as it is a place where Lord Buddha spent some time meditating and teaching, but it is not the place of his demise.

Option 2, Bodh Gaya, is also incorrect as it is the place where Lord Buddha attained enlightenment under the Bodhi Tree, but it is not his place of death.

Option 3, Sarnath, is not the correct answer either. Sarnath is significant because it is where Lord Buddha gave his first sermon after attaining enlightenment, but it is not the place of his passing.

Alert - The correct answer should be option 4, Kushinagar.