Why would the former Communist nations of Eastern Europe have worse pollution than other countries?

Witch one is it soo it the the question b.a,b,c,d

In the diagram below dab and dac are adjacent angles

Which of the following is an example of a policy that may be implemented by a business that has trouble with employees using the internet for their own personal needs? a. all employees will have to take a safety training class. b. employees caught using the internet for personal needs will have to take a professional development class. c. personal interviews will be conducted to find out who is using the internet for personal needs. d. employees will be monitored, but nothing will happen if their employer catches them using the internet for personal needs.