The correct answer is:
The tens place, for a value of 30.
Step-by-step explanation:
The number at the end of a whole number is in the ones place. The number to the left of that is the tens place; the number to the left of that the hundreds place, and beyond that the next place is the thousands.
In our number, 2 is in the ones place, and has a value of 2(1) = 2.
3 is in the next place left, which is the tens place. Its value is 3(10) = 30.
4 is in the next place left, the hundreds place; its value is 4(100) = 400.