Correct option is B
Given: 12 : 46 :: 18 : ?
The first pair is 12 : 46.
To determine the relationship:
12 × 4 = 48 − 2 = 46
Now, apply the same pattern to the second pair 18 : ?:
18 × 4 = 72 – 2 = 70
So, the number that best completes the relationship is 70.
The correct answer is (B) 70.