Convert Visual Grid to Fraction: Interpreting 4 Shaded Squares

To solve this problem, observe the visual representation as follows:

First, we need to count the total number of equal parts shown in the drawing. By examining the entire diagram, we can see that there are a total of six rectangles.

Second, we need to count how many of these boxes are shaded. Upon reviewing, we see that four boxes are shaded.

Therefore, the fraction of the shaded boxes compared to the entire group is given by the ratio of shaded boxes over the total number of boxes.

Thus, the fraction represented by the drawing is:

$\frac{4}{6}$

This corresponds to the first answer choice. Therefore, the correct answer is $\frac{4}{6}$.