Which of the following best describes diffraction? A.
the bending of a wave as it reflects from a rough surface

B.
the bending of a wave as it reflects from a smooth surface

C.
the bending of a wave as it crosses the boundary between two materials

D.
the bending of a wave as it goes around, or passes through, openings in a barrier

Which of the following is a direct benefit of the use of assembly lines in production a. laws against theft fraud and coercion are needed to protect free choice. b. the government needs to plan efficient outcomes. c. competition among producers by itself cannot ensure a wide range of consumer choices. d. works pressure the government to guarantee minimum wages