If a question lists the Annamalai, Palani, and Cardamom Hills, what is the correct regional conclusion?

Correct answer: These are hill groups associated with the Western Ghats of South India

The correct answer is A. The Annamalai, Palani, and Cardamom Hills are southern hill groups connected with the Western Ghats system. They occur in and around the highlands of Tamil Nadu and Kerala and form part of the rugged relief of peninsular India. Their location and continuity with the Western Ghats are the governing geographical clues. The Himalayas are young fold mountains in northern India, so their outer ranges cannot describe these hills. Deltas are depositional lowlands formed at river mouths, whereas Thar dunes are wind-built arid landforms. Thus the group should be identified as southern Western Ghats hills.