Question 2: A construction company has different projects, buildings, apartments and residential houses. However, one of the residential house constructions has been found to be unsafe, and construction workers fear to get injured due to the unsafe environment. As a manager of the company, you decide to use some risk control techniques to deal with the situation to protect oldwows your workers. List three risk control techniques, and give one specific example for each technique to deal with the above case. (1.5 pt)