Final answer:
To represent 10/12 as the sum of three fractions with the same denominator, the correct choice is option A) 1/12 + 5/12 + 4/12.
Step-by-step explanation:
To represent 10/12 as the sum of three fractions, we need to find fractions that have the same denominator.
The correct choice is option A) 1/12 + 5/12 + 4/12.
When we add these fractions together, we get:
(1/12) + (5/12) + (4/12) = 10/12