Answer: Broken glass at the scene of the accident
Explanation: Elizabeth Loftus is an American psychologist who has focused on studying to understanding memory. As she claims, what people remember is not always the facts related to an event, such as a car accident, because instead of remembering an event there may be some repressed memories that are false in that case, that is, they do not correspond to the event of a car accident. In other words, memories are not always correct because instead of memories related to an event, the brain can create false memories, which are suppressed. That's why observers who vividly heard the word "smashed" later recalled a broken glass in connection with a traffic accident.