Final answer:
The biosafety level attributed to microbiological agents that pose minimal risk, are not known to cause disease in healthy adults, and require only standard microbiological practices - no special equipment is BSL-1 (a).
Step-by-step explanation:
The biosafety level attributed to microbiological agents that pose minimal risk, are not known to cause disease in healthy adults, and require only standard microbiological practices - no special equipment is BSL-1 (a).
BSL-1 is appropriate for working with agents that pose minimal risk and do not cause disease in healthy adults. This level only requires standard microbiological practices such as using personal protective equipment (PPE) and following aseptic techniques. BSL-1 laboratories have minimal modifications and do not require special equipment.