"The Watchtower, on the other hand, needs to provide a plausible explanation as to how Jesus selected an entity to be his Faithful and Discreet Slave in 1919 that didn't exist until 1971. I don't envy them."
There were references prior to 1971 that stated that the board of directors was the governing body.
So the board of directors from the time of their release from prison and then the Cedar Point assembly was the FDS.