Correct Answer - Option 1 : Monday

Given,

5 November 2019 was Tuesday.

The number of days from 5 December 2011 to 31 December 2011 = 26

∴ The number of odd days = 5

The number of odd days in the leap year 2012 and 2016 = 2 + 2 = 4

The number of = 1 + 1 + 1 + 1 + 1 = 5

The number of odd days in the year 2019 = 309 ÷ 7 = 44 = 1 odd days in the ordinary year 2013, 2014, 2015, 2017, 2018

Total number of odd days = 5 + 4 + 5 + 1 = 15 ÷ 7 = 1 odd day.

So one odd day get subtract from Tuesday because day asked in past.

∴ **Monday** was the day of the week on the 5 December 2011.

**Hence, the correct answer is Monday.**