The correct option is B Wednesday
Given, 8 February in a certain non-leap year is Wednesday.
Let us find the number of odd days between 8 Feb and 4 Oct.
Month Feb Mar Apr May Jun Jul Aug Sep Oct
Days 20(=28 - 8) + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 4 = 238 days or 34 weeks or 0 odd days
So, the day on 4th Oct will be same as on 8 Feb i.e., Wednesday.
Hence, option (B) is the correct answer.