Sunday
Monday
Tuesday
Wednesday
Answer is Right!
Answer is Wrong!
The correct answer is (b).
The day of the week repeats itself every 7 days. So, if January 12, 1979 was Friday, then January 12, 1984 will be Monday.
Option (a), Sunday, is incorrect because January 12, 1979 was Friday, and 7 days after Friday is Monday.
Option (c), Tuesday, is incorrect because January 12, 1979 was Friday, and 14 days after Friday is Tuesday.
Option (d), Wednesday, is incorrect because January 12, 1979 was Friday, and 21 days after Friday is Wednesday.