The correct answer is option 3, Bengali. Chandiniangald was composed during the 16th century CE in Bengali.

Option 1, Sanskrit, is not correct because Sanskrit was an ancient language and was not commonly used for composition during the 16th century CE.

Option 2, Tamil, is also not correct because Chandiniangald was not composed in Tamil. Tamil was primarily spoken and written in the southern regions of India during that time period.

Option 4, Oriya, is not correct either because Chandiniangald was not composed in Oriya. Oriya is a language predominantly spoken in the eastern regions of India and was not commonly used for composition during the 16th century CE.

Therefore, the correct answer is option 3, Bengali.