Question 1 of 20 Which situation bestillustrates how market economies meet their citizens'
needs for employment and income?
A. A government agency assigns a laborer a job working in a factory.
B. A corporation hires an engineer who has just graduated from
college.
C. A parent teaches a child to farm using centuries-old techniques.
D. A religious organization selects a young person to become a
priest.

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up