Final answer:
Corrie's visit to Fred Koornstra is likely related to her family's involvement in the Dutch resistance during World War II as described in her autobiography, 'The Hiding Place'.
Step-by-step explanation:
The question "Why does Corrie visit Fred Koornstra?" is likely referring to an event from either a historical context or within literature, such as Corrie ten Boom's autobiography, 'The Hiding Place'. In her narrative, Corrie describes her family's efforts in helping Jews escape the Holocaust during World War II.
Visiting Fred Koornstra might have been related to these activities, such as acquiring supplies or seeking assistance, as Koornstra, a fellow Dutch citizen, was known for supporting the resistance against Nazi occupation. The exact reason for the visit would be detailed in the context of the book or historical documents covering that period and the Dutch resistance.