Q. Who among the following became a Jain monk and spent his last days at Shravanabelagola ?

Explanation by: Sartaj alamgir

Conversion
Chandragupta Maurya was persuaded to embrace Jainism by the sage Bhadrabahu I, who predicted a 12-year famine. Chandragupta believed that his power and thrones would not give him peace. 
 
Ascetic life
Chandragupta Maurya lived as an ascetic at Shravanabelagola for several years. 
 
Fasting to death
Chandragupta Maurya died by fasting to death at Shravanabelagola in 298 BCE. This practice is known as sallekhana or santhara. 
 
Chandragiri Hill
Chandragupta Maurya's tomb is located on Chandragiri Hill, which is opposite to Vindhyagiri hill. The hill also has the cave of his guru Bhadrabahu and memorials to monks and shravakas.