Correct Answer - Option 1 : Saumya
Person: Aarti, Saumya, Muskan, Kashish, Gargi
i) Aarti is older than Saumya.
Aarti > Saumya
ii) Muskan is elder to Aarti but younger than Kashish.
Kashish > Muskan > Aarti
iii) Kashish is older than Saumya.
iv) Saumya is younger than Muskan.
Kashish > Muskan > Aarti > Saumya
v) Gargi is the eldest.
Gargi > Kashish > Muskan > Aarti > Saumya
Hence, Saumya is the youngest.