FAR Part 28 addresses which of the following?

FAR Part 28 specifically addresses Bonds and Insurance, focusing on the requirements and guidelines for contractors to obtain and maintain surety bonds and various types of insurance necessary to protect against potential liabilities in federal contracts. This part establishes the framework for ensuring that contractors are financially responsible and capable of fulfilling their contractual obligations while also mitigating risks associated with government contracts.

The underlying principles in FAR Part 28 emphasize the importance of bonds, such as performance bonds and payment bonds, in safeguarding the government's interests and ensuring that contractors adhere to their commitments. Additionally, this part delineates the various types of insurance coverage that contractors might need to carry, along with the minimum coverage amounts required by the government.

While the other options pertain to important aspects of federal acquisition, they fall outside the scope of FAR Part 28. For example, Cost Accounting Standards are covered under FAR Part 30, environmental regulations are addressed through various regulatory frameworks, and foreign acquisition topics are discussed under FAR Part 25. Thus, Bonds and Insurance remains the key focus of FAR Part 28, making it the correct choice in this context.