A blood specimen wrapped in aluminum foil is primarily done to protect it from light exposure, which can compromise its integrity and affect test results. Light-sensitive substances in the specimen could degrade if not shielded properly. Thus, aluminum foil is a necessary measure in the transport process. ;
The blood specimen is wrapped in aluminum foil to protect it from light, which can degrade sensitive substances and affect test results. This step is crucial for maintaining the quality of the sample during transport. Therefore, the correct answer is C: To protect the specimen from light.
;