Which statement below is false? () all parallelograms are also trapezoids (2) all squares are also rectangles (3) all rhombuses are also squares (4) all rectangles are also parallelograms

\( \textbf{Step 1: Analyze Statement (1)} \) A trapezoid is commonly defined as a quadrilateral with at least one pair of parallel sides. Since every parallelogram has two pairs of parallel sides, every parallelogram qualifies as a trapezoid under this definition. \( \textbf{Step 2: Analyze Statement (2)} \) A square has all sides equal and all angles equal to \(90^\circ\). A rectangle only requires that all angles are \(90^\circ\). Therefore, every square meets the criteria for being a rectangle. \( \textbf{Step 3: Analyze Statement (3)} \) A rhombus has all sides equal but does not necessarily have all angles equal to \(90^\circ\). For a rhombus to be a square, it must also have all angles equal to \(90^\circ\). Since this is not true for every rhombus, the statement that all rhombuses are squares is false. \( \textbf{Step 4: Analyze Statement (4)} \) A rectangle has two pairs of parallel sides, which means it fits the definition of a parallelogram. Therefore, every rectangle is a parallelogram. \( \textbf{Conclusion} \) The false statement is: \( \boxed{\text{(3) all rhombuses are also squares}} \)