Answer:
The important details in this passage support the central idea that:
D) the children were sent away from home to protect them from air raids.
Step-by-step explanation:
According to the excerpt, the children were sent to a house in "the heart of the country, ten miles from the nearest railway station and two miles from the nearest post office." The purpose of these details is to show that the house was very much isolated. Therefore, it would most likely not be targeted during air raids, which tend to attack larger cities or military bases. The children would be, thus, protected while staying there.
"The Lion, the Witch and the Wardrobe" is a fantasy novel for children by author C. S. Lewis, published in 1950.