Only devices or components that are tested and approved by whom should be used?

The correct answer is PCI SSC because the Payment Card Industry Security Standards Council (PCI SSC) is responsible for developing security standards and best practices for organizations that process card payments. The PCI SSC establishes and promotes standards such as the Payment Card Industry Data Security Standard (PCI DSS), which outlines requirements for securing cardholder data.

When it comes to using devices or components for payment processing, those that have been tested and approved by the PCI SSC must be prioritized. This ensures that the devices comply with industry standards for security and functionality, thereby minimizing the risk of data breaches and protecting cardholder information.

Other organizations mentioned, like ISO (International Organization for Standardization), focus on general international standards across various industries, but not specifically on payment card security. FISMA (Federal Information Security Management Act) is related to the federal government's security requirements in the U.S., while Europay is a card payment system that was instrumental in the development of EMV standards but does not govern the approval process for devices and components. Thus, the authority of PCI SSC in this context makes it the right choice.