Answer: D) The child is compared to the shadow of the soldiers to suggest that his memory will always be with them.
Explanation: a metaphor is a figure of speech that consists in making a direct comparison between elements that aren't obviously related, in order to create an image in the reader's mind. In the given excerpt, we can see an example of a metaphor that compares the child to the shadow of the soldiers, this metaphor suggests that the soldier's memory will always be with them, so the correct answer is option D.