Start Fraction empty box over 2 End Fraction =four twelfths

A. two-thirds
B. 2
C. 5
D. one-third

The correct answer is B. 2.

To solve for the empty box, we can use the concept of equivalent fractions. We know that four twelfths can be simplified to one-third by dividing both numerator and denominator by 4, which gives us one-third.

We can then set up the equation:

Start Fraction empty box over 2 End Fraction = one-third

To solve for the empty box, we can multiply both sides by 2:

empty box = 2 x one-third

empty box = 2/3

Therefore, the answer is B. 2.