Which of the following statements is always true?

A. A parallelogram is a rectangle.

B. A square is a rhombus.

C. A rhombus is a square.

D. A rectangle is a square.

I believe the correct answer from the choices listed above is option B. A square is a rhombus. Rhombuses are a type of parallelogram, which means their opposite sides are always parallel, and their opposite angles are always equal. A square is the only type of rhombus where all four angles are equal

Hope this answers the question. Have a nice day.