The correct option is D 84,44,000
Rounding numbers to the nearest thousand means that we need to write the multiple of 1000 that is closest to the given number. For this, we need to check the digit to the right of the thousands place, that is, the hundreds place.
The number is 84,43,675. The number from the thousands place, 3,675, is closer to 4,000.
Therefore, 84,43,675 = 84,44,000