56. What is the overall theme of the passage?
(A)To convince the reader to pursue engineering and pulverize other career goals.
(B) To demonstrate the value of engineering and highlight the field's contributions.
(C) To give in-depth examples of how biomedical engineering has improved life for
the majority.
(D) To provide context for how even small do-it-yourself home projects should be
approached with an engineer's mindset.