D. seems the best to me so hope it helps
It's definitely letter A. Mononucleosis
Answer:
Rabies or Neurotropic lyssavirus
Explanation:
Safety ... im pretty sure. <span />
Answer: Use your maximum heart rate.
Explanation:
To set your intensity level, you need to use your maximum heart rate, which is determined by subtracting your age froom 220.
Hope this helps! Please mark as brainliest!