The correct option is B Trapezoid
Square: It has four equal sides and two pairs of parallel sides; hence, it cannot be the shape of the toy’s top face.
Option B
Rectangle: It has equal opposite sides and two pairs of parallel sides; hence, it cannot be the shape of the top face of the toy.
Option C
Triangle: It is a closed figure with 3 sides; hence, it is not a quadrilateral, and not the shape of the top face of the toy.
Option D
Trapezoid: A trapezoid is a quadrilateral with at least one pair of parallel sides.
Hence, the top face of the toy is a trapezoid.