American gymnast Simone Biles has been honoured with BBC Sports Personality of the Year’s Lifetime Achievement award.Biles is considered one of the greatest gymnasts of all time, having won four Olympic gold medals and 19 World Championship titles.In 2018, she spoke candidly about being abused by former team doctor Larry Nassar, who is now serving a life sentence in jail.She has also been praised for talking about her mental health struggles.Biles said receiving the Lifetime Achievement award was an “unbelievable honour” and “truly humbling”.