Correct Answer - Option 2 : Sunday
We have to calculate odd days of year.
2007 = 1
2008 = 2 (leap year)
2009 = 1
2010 = 1
2011 = 1
2012 = 1 (It is before February, so odd day is 1)
Total odd days = 1 + 2 + 1 + 1 + 1 + 1 = 7
So 7 or 0 odd day.
So, 0 odd day from Sunday is Sunday.
Hence, Sunday is the correct answer.