Final answer:
To solve this puzzle, place the number 16 in one of the circles, followed by 6 in a connected circle, and finally 2 in another connected circle. This will ensure that each row of three connected circles has a sum of 24.
Step-by-step explanation:
In this puzzle, we need to drag the numbers into the circles so that each row of three connected circles has a sum of 24.
To solve this puzzle, we can start by placing the number 16 in one of the circles. Then, we can place the number 6 in a circle connected to the circle with 16. Finally, we can place the number 2 in a circle connected to the circle with 6. This way, each row of three connected circles will have a sum of 24.
Therefore, the correct answer is A. 16.