Final answer:
Organizations are legally mandated to keep employee records for tax and labor compliance and hazardous waste disposal records to comply with environmental regulations, but not necessarily customer income levels. Employee records and hazardous waste disposal data are protected under specific laws, whereas customer income level requirements vary. The correct options are d. a and b.
Step-by-step explanation:
An organization may be required by law to keep various types of data. The types of data an organization is legally mandated to preserve often include employee records and records related to hazardous waste disposal. Keeping employee records is essential for tax purposes, to comply with labor laws, and to maintain accurate information on payroll and benefits. Regarding hazardous waste disposal, organizations must track and report how they dispose of hazardous materials to ensure compliance with environmental regulations.
On the other hand, customer income levels are not universally required by law to be kept by organizations unless it is directly relevant to the service provided or falls under specific regulations for financial institutions.
In context with the Freedom of Information Act (FOIA), which provides public access to government records, there are exemptions to this transparency, like the protection of medical records for government employees. This indicates that sensitive personal data, such as medical records, are often excluded from mandatory public disclosure to protect individuals' privacy.
So, in answer to the original question, the correct option is d. a and b - employee records and hazardous waste disposal are types of data that an organization may be required by law to keep.