Which physical feature of India prevents the cold winds from central Asia from entering the Indian subcontinent?

Which physical feature forms the eastern boundary of the Great Indian Desert (Thar Desert) and separates it from the rest of the Peninsular landmass?

Consider the following statements regarding the Aravalli Range: I) The Aravalli Range prevents the eastward expansion of the Thar Desert. II) The Aravalli Range acts as a major water divide in North-Western India. III) The Aravalli Mountains have a significant impact on the climate of Rajasthan. IV) The Aravalli Range extends from Delhi to Gujarat. Choose the most appropriate answer from the options given below: