Answer:
Option D
Explanation:
The Wagner act was targeted at private sector employees to engage in unions ,and also encourages employers to bargain with unions with good faith. It allows the employee to be involved in strikes and activities of the unions.
With this employers can bargain with unions in good faith ,as occasionally, they carry out strikes if the employees are not treated well or there is a breach in agreement. So this acts enables employers to bargain with unions.