If 1 January 2003 is Wednesday, then what day will be on 1 January 2004?

Given: 1 January 2003 is Wednesday

1 January 2004 = ?

Total number of odd days between 1 January 2003 to 1 January 2004 = 365 $$\div$$ 7 = 52 remainder 1 (2003 is a normal year)

So, on 1 January 2003 Wednesday + 1 = Thursday

Thus, correct option is (b).