Explanation:

Statement 1: The Servarayans form part of the southern ranges of the Eastern Ghats System. It also represents the highest peak in southern part of the Eastern Ghats, with the Solaikaradu peak.
Statement 2: They conjoin the Anaimalai Hills to the northwest, the Palni Hills to the northeast and the Agasthyamalai Hills to the south as far as the Aryankavu. The crest of the hills forms the boundary between Kerala and Tamil Nadu. Anamudi in Eravikulam National Park, is the highest peak in Western Ghats and also the highest point in India south of the Himalayas
Statement 3: They form a southern portion of the Western Ghats. Anamala / Anaimalai Hills are south of where the Western Ghats are broken by the Palakkad Gap, which in turn is south of the Nilgiri Hills. They border the state of Kerala on the Southwest and the Cardamom Hills to the southeast.