Coal mining is a dangerous and dirty job. Suppose someone developed new machinery that made coal mining safer and cleaner; at the same time, suppose it made coal miners more productive. We would expect that the wages of coal miners would

D. Rise, fall, or stay the same

Explanation:

In the case of a new invention, there are several scenarios that could play out. An invention which makes a job such as coal mining which was previously dangerous and dirty to become safer could result in;

1. A rise in the wages of the miners, perhaps, because their productivity is now increased.

2. A fall in the wages of the miners perhaps because they do not have to do much stressful work as there is now new machinery to make work easier.

3. Stay the same if the employer reasons that their wages are sufficient or commensurate to the work they now do.

the most important factor in the

work process or industry is to retain the interest of the employee. and to

retain them, their salary or profit must be adjusted to the best value. unless

the employee does not do his job properly, employees must receive bonuses or

benefits to ensure them to stay in the company. it will actually make them stay

longer, make them feel important and reduce costs for hiring new employees.

explanation:

mark brainliest!

explanation: i am going to tell you a lie dont know i just wanted to answer lol