______ nation has been banned from international sporting events for four years ?

a) China
b) Russia 
c) Ukraine
d) Turkey

Russia has been banned from international sporting events for a period of four years including the 2020 Tokyo Olympics and the 2022 Beijing Winter Olympics. The World Anti-Doping Agency made the announcement on December 9, 2019. Russia has been accused of falsifying data from an anti-doping laboratory.