Final answer:
All of the materials listed - bloody saliva, vaginal secretions, and cerebrospinal fluid - can contain bloodborne pathogens. Appropriate safety measures should be taken when handling these fluids to prevent transmission of infectious diseases. So, the correct answer is option d.
Step-by-step explanation:
These fluids are considered potentially infectious as they can harbor viruses such as hepatitis B (HBV), hepatitis C (HCV), and human immunodeficiency virus (HIV), which are all bloodborne pathogens. Health-care workers and others who may come into contact with such fluids must take appropriate precautions to prevent infection.
Contact with infected body fluids can occur through various means including intravenous drug use, sexual transmission, or healthcare settings. It is critical that preventive measures such as using personal protective equipment and following protocols for safe handling and disposal are undertaken to reduce the risk of transmission.
So, the correct answer is option d.