No i dont think so precautions are needed sometimes
The doctor. most likely, is referring to the settling process. In this process, the muscles are still adjusting or on the process of healing so he is experiencing some back pains due to this. Once the muscles are settled in place, he would feel normal again.
The Answer you are looking for is Option C
Goodluck,
Have a nice day
This is because they are not mature enough and haven’t experienced trials to know they are ready
