Solve the Fraction Addition: 1/4 + 3/8

To solve this addition problem involving fractions, we first need to ensure both fractions have a common denominator.

Step 1: Convert $\frac{1}{4}$ to an equivalent fraction with a denominator of 8.

To do this, we need to multiply both the numerator and denominator of $\frac{1}{4}$ by 2 to achieve the desired denominator:

$\frac{1 \times 2}{4 \times 2} = \frac{2}{8}$

Step 2: Now we can add the fractions $\frac{2}{8}$ and $\frac{3}{8}$ since they have a common denominator.

$\frac{2}{8} + \frac{3}{8} = \frac{2 + 3}{8} = \frac{5}{8}$

Therefore, the sum of $\frac{1}{4}$ and $\frac{3}{8}$ is $\frac{5}{8}$.

Thus, the correct answer to the problem is $\frac{5}{8}$.