Final answer:
Phlebotomists in today's health-care system may have additional duties such as performing patient vital signs and transporting specimens to the laboratory, which are tasks supplementary to their main role of drawing blood.
Step-by-step explanation:
Among the potential additional duties of a phlebotomist in today's health-care system, options A (Performing patient vital signs) and B (Transporting specimens to the laboratory) are viable tasks that extend beyond the traditional role of drawing blood. While option C (Performing dermal punctures) is also part of a phlebotomist's core responsibilities, it's not an additional duty.
Option D (Selecting specimen collection equipment) is generally within the foundational scope of phlebotomy practice. Additional duties such as vital sign measurement may be performed under the direct supervision of a registered nurse, particularly in settings like dialysis centers where technicians assist with both monitoring and procedure preparation, though it is important to note that the range of responsibilities can vary depending on the healthcare facility's policy and the phlebotomist's level of training and certification.