Answer:
d. Their use requires careful planning.
Step-by-step explanation:
Contingent workers, also known as temporary or contract workers, are employees who work on a temporary or flexible basis, typically without the same level of job security and benefits as permanent employees. The statement "Their use requires careful planning" is true because organizations need to carefully plan and manage their contingent workforce, including recruitment, onboarding, assignment of tasks, and monitoring, due to the temporary and often project-based nature of their work arrangements. This includes considerations such as determining the appropriate number of contingent workers needed, identifying the right skill sets for the job, and managing their contracts and performance effectively. Proper planning is important to ensure that contingent workers are integrated smoothly into the workforce and can contribute to the organization's goals and objectives.