In the original Star Wars trilogy, David Prowse was the actor who physically portrayed Darth Vader.

The statement is true because David Prowse was the British actor who physically portrayed Darth Vader in the original Star Wars trilogy. Although James Earl Jones provided the iconic voice for the character, it was David Prowse who physically donned the black costume and helmet, bringing Darth Vader to life on screen through his imposing presence and physical performances.