Final answer:
In the medical field, units used to measure total biological radiation exposure include Roentgen, Rad, Rem, and Gray.
Step-by-step explanation:
In the medical field, the units used to measure total biological radiation exposure are:
A) Roentgen
B) Rad
C) Rem
D) Gray
The Roentgen (R) measures the amount of energy absorbed by dry air. The Rad (radiation absorbed dose) is the most common unit used to measure the effects of radiation on biological tissue. The Rem (roentgen equivalent man) is a unit for radiation damage that is used frequently in medicine. And finally, the Gray (Gy) is the SI unit for measuring radiation dose.