Which statement is a true statement?

a. all rectangles are squares.
b. all squares are rectangles.
c. every rhombus is a rectangle.
d. every rectangle is a rhombus.

So a square is a special kind of rectangle, it is one where all the sides have the same length. Thus every square is a rectangle because it is a quadrilateral with all four angles right angles. However not every rectangle is a square, to be a square its sides must have the same length.

B

Hope this helps!