I believe the answer is C
The lymphatic system helps maintain fluid balance in the body by collecting excess fluid and particulate matter from tissues and depositing them in the bloodstream. It also helps defend the body against infection by supplying disease-fighting cells called lymphocytes.
Well which strength training exercise are you talking about there are alot them and I mean alot there are leg, arms, stomach, and brain.
For legs and arms there are running, swimming jumping jacks and ect
and for your braing there learnig helpers aka tutors and learning Rx