Answer: OT
Explanation: OT stands for Online Tardy, which is when you are late for your class, and therefore another teacher has to tell you what you missed.
That item is a painkiller it helps you to stop feeling pain or a type of ache.
Finding out if an exercise is safe needs to determine the fitness level of the exercise and how much it takes to achieve the result of the exercise. The person performing the exercise needs to know their endurance level and if they are able to perform the exercise without injury or illness.