Why has there been (and is still) such strong opposition to the trade union movement by American business management

the reasons have been explained below.

Explanation:

The reasons that business managements are in opposition to trade unions are:

1. Trade unions cause difficulty in getting employees to do their jobs.

2. Trade unions bring about an increase in the cost of production for managers as trade unions constantly seek for employee benefits and pensions.

3. Trade unions are sometimes against how the normal functioning of the business. This is because when things do not go their way, unions use various measures against management. E.g the use of strikes.

4. Trade unions offer no flexibility to management. Management would find it difficult to make changes fast when shifts happen in the economy, government or the business.

answer(d) all of the choices are correct;

a government agency or homeowner.- third choice