Respuesta :
Sandra should give her workout more variety by either altering the exercises, intensity, or volume of work
The correct answer for above statement is:
Sandra should give her workout more variety by either altering the exercises, intensity, or volume of work.
Explanation:
As sandra wants to gain strength for spring track and she really want to do that so she should bring variety either by doing different kinds of exercises or she can can achieve that by increasing the volume of the work or the time period by these she can achieve her goals.