Answer: 3:7
Explanation:
The ratio 6:14 can be simplified by dividing both numbers by their greatest common divisor. In this case, the greatest common divisor of 6 and 14 is 2.
So, if we divide both numbers by 2, we get the simplified ratio of 3:7. Therefore, the ratio 6:14 is equivalent to the ratio 3:7. Out of the given options, the only ratio that is equivalent to 6:14 is 3:7.
So, the correct answer is: 3:7.