Final answer:
The correct answer True. The decline in the frequency of union strikes due to their declining effectiveness in exerting economic pressure on employers is true. This is influenced by several factors, such as the shift to service industries, globalization, and stronger workplace laws, leading to a diminished necessity for union representation.
Step-by-step explanation:
The statement that the decline in the frequency of union strikes is attributed to their declining effectiveness as a means of placing economic pressure on an employer is true. Over the years, the proportion of U.S. workers belonging to unions has significantly diminished. Several factors have contributed to this trend, including the shift from manufacturing to service industries, globalization, and the implementation of more comprehensive workplace protection laws. With the evolution of the global economy and the protective measures set in place by the government, workers have found less need for union membership.
Moreover, economic pressures resulting from globalization and increased competition from foreign producers have altered the bargaining landscape. Unions were once vital in setting workplace standards and advocating for worker rights, but the irony lies in the successful establishment of these desired regulations that have subsequently reduced the perceived need for union representation.