Correct option is B
The total number of days from 13th January 2021 to 23rd August 2021, including both days, is calculated as follows:
January: 19 days
February: 28 days
March: 31 days
April: 30 days
May: 31 days
June: 30 days
July: 31 days
August: 23 days
Total = 19 + 28 + 31 + 30 + 31 + 30 + 31 + 23 = 223 days.
Correct answer is (b) 233.