Final answer:
Drawing blood for a lab analysis poses the highest risk exposure due to potential needlestick injuries and contact with bloodborne pathogens.
Step-by-step explanation:
The job responsibility with the highest risk exposure among the options provided is drawing blood for a lab analysis. This process, performed by phlebotomists or other medical professionals, involves venipuncture, which is the collection of blood from a vein, and exposes the healthcare worker to potential needlestick injuries and bloodborne pathogens. Drawing blood carries a higher risk compared to other tasks like collecting a urine specimen, taking a patient's vitals, or assisting in suture removal, which generally involve less direct exposure to blood.