UPSC Civil Services 2017 Prelims General Studies Paper I

NCERT Class 11: India- Physical Geography.
A. Page 17: The Eastern and Western Ghats Meet at Nilgiri hills.
B. Page 16: Nilgiri hills are in Karnataka and Tamilnadu.
Now, If there is a place serving as Ecological link between Eastern and Western Ghats, then most likely it ought to be in Tamilnadu, than in Karnataka, because of the location."A" is the most fitting answer because it's located in Tamilnadu.