Which example shows the proper use of technology? using a cell phone while walking to school

listening to a song using headphones while riding a bike to a friends house

playing a videogame while walking on the sidewalk

keeping the volume down on headphones while listening to music

What is an important step to prove something is valid or not? determining the reliability observing research testing

Which of the following requires the action of a first class lever in the body

A72-year-old woman fell in her bathtub and fractured her hip. in viewing the fracture, x-ray revealed osteoporotic changes in her bone as well. after reduction of the fracture, and immobilizing the bones with internal pins, what type of exercise would the doctor have advised her to do as soon as she was able in addition to prescribing calcium supplements to improve her bone mass?