Correct Answer - Option 3 : Sunday
13 September 2019 is a Friday so 13 September 2018 was a Thursday (2019 is not a leap year).
18 June 2018 to 13 September 2018 = 13 + 31 + 31 + 13 = 88 days i.e. 12 weeks + 4 odd days
Thus, 17 June 2018 + 88 days or 4 odd days = 13 September 2018
So, 13 September 2018 - 4 odd days = 17 June 2018
So, Thursday – 4 days = Sunday
Hence, the correct answer is 'Sunday'.