Inside the bus, in his summer Class-A uniform with its brass glitter and infantry-blue shoulder cordon, Jamie Sabin was going home. Fort Benning would be a fading dream; Preston, Virginia, a place unknown, his future. He was in between, fumbling with puzzle pieces, making up stories about the real Jamie Sabin. Each of these he set adrift like a paper boat on a shifting sea of daydreams. He did that encased in the drone and shudder of diesel pistons and hissing tires. Jamie Sabin was going home to a place unknown.

In this paragraph, the paper boat is a
A. simile for stories Jamie makes up about himself.
B. metaphor for daydreams.
C. simile for Jamie's past.
D. metaphor for Jamie's past and future.

B. metaphor for daydreams.

A. simile for stories Jamie makes up about himself.

To determine the answer to this question, we need to understand the usage of the phrase "paper boat" in the given paragraph.

The paragraph describes Jamie Sabin being on a bus, going home, and fumbling with puzzle pieces, making up stories about himself. It also mentions that each story Jamie makes up is set adrift like a paper boat on a shifting sea of daydreams.

Now, let's analyze the options:

A. Simile for stories Jamie makes up about himself: This option suggests that the paper boat is representing the stories Jamie makes up about himself. However, there is no direct comparison between the paper boat and the stories Jamie makes up.

B. Metaphor for daydreams: This option suggests that the paper boat represents daydreams. Based on the given sentence, it is clear that the paper boat is compared to the stories Jamie makes up, not daydreams. Therefore, this option is not correct.

C. Simile for Jamie's past: This option suggests that the paper boat represents Jamie's past. There is no mention of Jamie's past in the paragraph, so this option is not correct.

D. Metaphor for Jamie's past and future: This option suggests that the paper boat represents both Jamie's past and future. The paragraph does not provide any information about Jamie's future, so this option is not correct.

As we can see, none of the options accurately describe the meaning of the paper boat in the given paragraph. Therefore, the correct answer cannot be determined based on the provided information.