Skill-related fitness goals include a. cardiovascular fitness b. reaction time c. muscular endurance d. flexibility . c. agility and cardiovascular fitness.

B. Reaction time is a skill related fitness goal, as it requires focus and concentration on short notice and requires practice to master. 

Skill related fitness goals include B, which is reaction time

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.