One Plausible Explanation of the U

One plausible explanation of the U.S. productivity slowdown starting in 1973 is that it was the result of the time needed to adapt to new technology. This explanation would require that

A) workers withdraw from the labor force to learn about the new technology.
B) a large number of new entrants be attracted to the labor force.
C) managers be reluctant to adopt changes.
D) workers time at their jobs be diverted from production to learning the technology.