Final answer:
Option B. Bacillus pumilus spore strips are used for quality control of gamma irradiation due to their resistance to gamma rays.
Step-by-step explanation:
For quality control of gamma irradiation, Bacillus pumilus spore strips are commonly used. These biological indicators are selected for their resistance to irradiation and are used to verify that the sterilization process is effective. Gamma radiation sterilization protocols are tested using biological spore indicators from resilient bacteria such as G. stearothermophilus, B. atrophaeus, B. subtilis, or B. pumilus. B. pumilus spores in particular exhibit remarkable resistance to gamma rays, making Bacillus pumilus spore strips an appropriate choice for monitoring the effectiveness of gamma irradiation sterilization.
The correct answer for the quality control of gamma irradiation is Bacillis subtilis spore strips (a). Biological indicator spore tests, like the one using Bacillis subtilis spores, are used to determine whether the endospores are killed by the sterilization process. These spore tests can be used to test the effectiveness of various sterilization protocols including gamma radiation.