What is the sum of the fractions 1/4 and 3/4 after finding a common denominator?

To determine the sum of the fractions 1/4 and 3/4, first, it's important to recognize that both fractions already have the same denominator, which is 4. When adding fractions that share a common denominator, you simply add the numerators while keeping the denominator the same.

So, adding the numerators of 1/4 and 3/4 gives you 1 + 3, which equals 4. The denominator remains 4, resulting in a fraction of 4/4. Since 4/4 simplifies to 1, this sum is correctly expressed as 1.

Thus, the correct answer is indeed 1, as indicated by the option that states 1.