Answer is A. 12/13.
Step-by-step explanation:
In order to divide fractions you have to use the method KCF which stands for: Keep, Change Flip.
Step 1: Keep 6/13 how it is, 6 over 13.
Step 2: (If you need to add the multiply symbol, change the division symbol into a multiplication symbol).
Step 3: Then flip 6/12 making it 12/6.
Step 4: Multiply the numerator straight across 6 times 12, which is 72, now multiply the denominator straight across by 13 times 6 which is 78.
Step 5: After this process you should get 72/78, (72 over 78, 72 on top, 78 on bottom.
Step 6: (Last Step): Simplify both 72 and 78 by 6, (divide 72 and 78), and you should get the answer of 12/13.