How was Bertha Jorkins useful to Voldemort?

A) She took care of him when he he was a hairless, snakelike child.

B) She brought him the food he needed to stay alive.

C) She hid him in her house when Fudge was looking for him.

D) She gave him information he used to form his plan.

The correct answer is D: She gave him information he used to form his plan.

Explanation:

Bertha Jorkins is a fictional character from the book Harry Potter and Goblet of fire, written by J. K. Rowling. Bertha was a witch employed in the Department of Magical Games and Sport in the Ministry of Magic, before her death. Voldemort used her memories in order to prepare his plan of murdering Harry Potter.

Bertha was overpowered by Peter Pettigrew during her holiday in Albania. Pettigrew brought her before Lord Voldemort, who also was in Albania. Voldemort managed to break through her memory by using a powerful charm, so he could get some important information about the Triwizard Tournament which he used to try to kill Harry Potter.