Privatization of the public sector jobs can... A. actually reduce the percentage of union membership.
B. make the service provider directly responsible to the consumers.
C. make it more difficult to avoid or shorten a strike.
D. All the above are true.

A. actually reduces the percentage of union membership.

Explanation:

Remember, the term privatizaton simply refers to a transfer of ownership of public sectors like an energy company owned by the government to private individuals.

We can say this because Public sector jobs are often seen as less profit-oriented, but as welfare focused jobs. Thus, in most economies when privatization occurs, management tends to reduce the percentage of union membership by employing certain tactics.