Answer :
Final answer:
The CPSC Handbook is the primary source that establishes the standard of care for public playground owners' risk management programs, focused on protecting the public and ensuring safety for children using playground equipment. So the correct option is a) CPSC Handbook.
Explanation:
The standard of care for a public playground owner's risk management program is most directly established by the Consumer Product Safety Commission (CPSC) Handbook. The CPSC is tasked with protecting the public from unreasonable risks of injury or death associated with the use of consumer products, including playground equipment. Although the Occupational Safety and Health Administration (OSHA) is responsible for workplace safety and promulgates standards to protect workers from various hazards, OSHA guidelines are not the primary standard for public playground risk management. Instead, the CPSC Handbook provides specific guidelines for playground safety that owners and operators should follow to minimize risks to children. In addition, the Americans with Disabilities Act (ADA) Regulations could be relevant to ensure playgrounds are accessible to children with disabilities, but the ADA is not the primary source for safety standards.