Correct Answer - Option 3 : Saturday
Concept used:
Number of odd days in leap year = 2 days
Number of odd days in non-leap year = 1 day
2016 is a leap year
Calculation:
On 31st December 2015, it was Thursday.
The number of odd days from the year 2015 to the year 2016 = 2 days. (Because 2016 is a leap year)
On 31st December 2016, it was Saturday.
∴ Saturday is the correct answer.