The strategy to using contract workers carries risks because of what reason? O a. No legal arrangements need to be met O b. The company is not suppose to direcly supervise the worker c. Small companies cannot provide their own testing programs O d. Paid time off, Health insurance, and Parental leave is not covered These are example of why type of sources which can include help wanted advertising, colleges and universities, and job searching. a. External O b. Social c. Internal O d. Market