After reading the following options, the correct one is the third option, PET scans will use tracers to inject in a vein in someone's arm. Then, the organs as well as tissues will absorb the tracer. This information makes the third option correct because PET scans mostly work with your tissues to see if there are any diseases someone may have in their body.
Hope I helped! :)
Peaculiar
Answer:
Improves mental health.
Explanation:
Because when someone exercises it releases dopamine, the "feel good" hormone. That contributes to excellent mental health in older and even younger people.
