Final answer:
A closed fracture often results in deformity and does not involve a break in the skin. Very localized pain is not a reliable sign of a fracture, and closed reduction is a method for treating such injuries without surgery.
Step-by-step explanation:
A clue that you have a closed fracture is B: deformity. A break in the skin would indicate an open fracture, which carries a high risk of infection as the bone has pierced through the skin. Closed fractures do not break the skin but can still be very serious. When bones are abnormally weak, they can fracture upon mild trauma, and the bones may become deformed. Closed reduction is a non-surgical procedure used to manipulate the bone back into its natural position. Not all bone fractures will have very localized pain over the break, and it's important to recognize that a bone fracture is the same thing as a broken bone, which could involve a crack or a complete break.