Final answer:
The correct retention period for archived samples cannot be determined without additional context, as it depends on various factors such as the sample type, the archiving purpose, and applicable regulations. (option a,b,c,d)
Step-by-step explanation:
The length of time that archived samples should be retained after the recovery or collection date can vary depending on the type of sample, the purpose of archiving, as well as specific legal, regulatory, or institutional guidelines. However, based on the options provided, there is no universally agreed-upon retention period applying to all archived samples.
In many cases, the period can extend beyond the options listed, and for certain types of research or clinical samples, retaining the samples indefinitely could be important. Hence, without specific context, it's impossible to provide an exact answer as to whether it should be 4, 6, 10, or 12 years.
Hence,the answer is option a,b,c,d