<span>Being in the middle, rather than at either extreme, of the health continuum maintaining a balance of physical, mental/emotional, and social well-being? I can't tell where the options are separated but that sounds reasonable to me...</span>
A
The formula for finding for finding your maximum heart rate is subtracting your age from220
noun
1.
used in reference to an activity, cause, etc. that is currently fashionable or popular and attracting increasing support.
"the environmental bandwagon is feeling mighty crowded"
2.
(especially formerly) a wagon used for carrying a band in a parade or procession.
"the colorful bandwagon was later purchased for use in circus parades"
It would be the last answer I believe