What is the recommended amount of physical activity for children? a. at least 2 hours per day b. 4 hours per week c. at least 1 hour per day d. no more than 30 minutes per day

The correct answer will be C, At least 1 hour per day.

Unlike  ct scans, which use x-rays,  mri scans  use powerful magnetic fields and radio frequency pulses to produce detailed pictures of organs, soft tissues, bone and other internal body structures.  differences between  normal and abnormal tissue is often clearer on an  mri  image than a  ct.you can see more with a mri scan. for example on an mri you can see internal bleeding.