In the description in the drummer boy of shiloh in the setting in lines 24-26 what does the special wind suggest about the locations of the two armies ?

The sound the boy hears is actually the sound of both armies, which shows that are close to one another. This detail helps create the mood of  anxiety and tension in the beginning of the story.

Explanation:

According to a different source, these are the options that come with this question:

The description in these lines is that of a "vast wind." This sound is not actually wind, but thousands of people whispering. The soldiers of both armies are whispering in the night, and this is the sound the boy hears. This conveys the mood of nervousness and anxiety that the soldiers were feeling. It also shows that the two armies were very close to each other.  

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.