Complete the sentence below. Some __ are trapezoids but others are not. quadrilaterals squares parallelograms rhombuses

## Step 1
The problem is asking us to identify a type of quadrilateral that can be a trapezoid or not. A trapezoid is a quadrilateral with exactly one pair of parallel sides.

## Step 2
Let's analyze each option:
- Quadrilaterals: This is a broad category that includes all four-sided shapes. This category includes trapezoids, but also includes other shapes that are not trapezoids.
- Squares: This is a specific type of quadrilateral where all sides are equal and all angles are 90 degrees. This shape is not a trapezoid because it has two pairs of parallel sides, not just one.
- Parallelograms: This is a quadrilateral with both pairs of opposite sides parallel. This shape is not a trapezoid because it has two pairs of parallel sides, not just one.
- Rhombuses: This is a quadrilateral with all sides of equal length. This shape is not a trapezoid because it has two pairs of parallel sides, not just one.

## Step 3
Based on the above analysis, the only option that fits the criteria of the problem is "quadrilaterals". This is because a quadrilateral can be a trapezoid (if it has exactly one pair of parallel sides) or it can be any other type of quadrilateral (like a square, parallelogram, or rhombus).