Angular motion either increases or decreases the between two bones. These movements may occur at many of the joints. They include the following specific types: (decreasing or increasing the angle between bones, respectively), (extension beyond normal), (lateral bending of the vertebral column in a coronal plane), (moving a bone toward or away from midline, respectively), and (the distal end of a limb moves in a circle).

The correct answer is c

It's definitely not b or c, it's either a or d but i can't figure out which one sorey

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 .