Explanation:

1900 is not a leap year, so days in feb. is 28. 

Day on 1st feb. is thursday, so day on 28th feb. is Wednesday. 

Hence, the day on 1st march is Thursday.

Hence, option 1 is the correct answer.

Note :- Every 100 years is not a leap year, but every 400 years is a leap year.a leap year not only if it is divisible by 4 -- it also has to be divisible by 400 if it is a centurial year. So 1700, 1800 and 1900 were not leap years, but 2000 was.