Choose all the answers that apply. Connective tissue
attaches muscle to bone
joins bones together
cushions the body and stores energy
lines the inside of hollow organs
covers the outside of an organism
hold organs and other tissue in place

idk but if i had to take an educated guess i’d say a c d

The first means of speeding up reactions mentioned by the speaker is raising the enzymes 

Na+ loss through sweet plus the dilution has lowered na+ concentration outside of neurons, altering the na+ equilibrium potential. sodium exists more outside the cells than inside. when na+ is lost by sweat plus the dilution( because they drink a lot of water) changes the concentration outside the cell, forcing the water to enter the cell and attempt to balance the concentration inside/outside.the problem is that the abundance of water will cause the cells to swell. most cells can adapt, however, the brain cells can't that's why the runner has confusion and can't control the muscles.  if not treated and this occurs in less than 48 hours, it can be immediately fatal .