The correct option is D 2300
A leap year should be divisible b by 4 and in case of century year it should be divisibile by 400.
In the given options 2000 and 2100 are century years while 2024 ans 2004 are normal years.
2024 and and 2004 are divisible by 4.
2000 is divisible by 400 while 2300 is not divisible by 400.
So, it is not a leap year.