Answer:
2,600.
Explanation:
Rounding 2,561 to the nearest hundred means rounding it to the nearest multiple of 100.
To do this, we need to look at the digit in the tens place, which is 6. Since 6 is greater than or equal to 5, we round up the digit in the hundreds place, which is 25, by 1.
Therefore, rounding 2,561 to the nearest hundred gives us 2,600.