10. In the first episode, "A Land of Fear", while trying to take Ian and Barbara home, the Doctor inadvertently lands in 18th century France instead. Who is the first to realize what historical era it is?
From Quiz Story 8: "The Reign of Terror"
Answer:
Barbara Wright
The first episode begins with the Doctor insisting on Barbara and Ian leaving the TARDIS, since Ian (at the end of the previous serial "The Sensorites") disparaged the Doctor's control of his own machine. However, before being put out and left behind, Ian and Barbara insist on ensuring that they have, indeed, returned to their own time and place.
Soon after leaving the TARDIS, the group meets a young boy dressed in tattered clothing and scared out of his mind. He informs them that they are not in England, but rather a short distance from Paris, France.
Coming across an abandoned house, the time travelers enter and find a stocked wardrobe, along with weapons and traveling papers. Barbara, being a history teacher, quickly recognizes the clothing as from the 18th century, and makes the deduction that they have landed during "The Reign of Terror" of the French Revolution.
The Doctor's companions are his granddaughter Susan Foreman (played by Carole Ann Ford) and her teachers Barbara Wright (Jacqueline Hill) and Ian Chesterton (William Russell).