The client is a 70-year-old female training for a triathlon. She was hit by a car while jogging and has an abrasion that is 25 cm by 12 cm on her right leg and a liver laceration. She underwent an exploratory laparotomy to repair the liver laceration and to search for other internal injuries. The client has no chronic medical conditions and is in good health. She takes a calcium and magnesium supplement daily. She denies smoking or drinking alcohol. What age-related factors may factor into this client's wound healing? Select all that apply.