By enjoying more consumer goods today, the economy spurs growth in future consumer goods

Zero economic profits would most likely exist in which market environment?

A) Pure monopoly B) Oligopoly C) Perfect competition D) Any market structure riddled with uncertainty E) None of the above.

In absolute terms and relative to other countries, what happened to U.S. growth rates in productivity as measured by output per paid hour in the late 1960s and 1970s?

(a) They increased. (b) They stayed the same. (c) They fell. (d) They fell early on and then increased past their previous levels.