Let's mark the numbers on the arrows for better understanding.
In the first box, the downward arrows have the numbers:
1 3 8.
If we increase the first number by 1, the second number by 2, and decrease the third number by 2, we get:
2 5 6.
These are the numbers associated with downward arrows in the second box.
Similarly, if we increase the first number by 1, the second number by 2, and decrease the third number by 2, we get
3 7 4.
These are the numbers associated with downward arrows in the third box.
So, for the answer box:
We have to increase the first number by 1, the second number by 2, and decrease the third number by 2. We will get
4 9 2.
So, the numbers associated with the downward arrows in the answer options must be 4 9 2.
Hence, the correct option is: