The stage of the plot that shows disagreement or hostility between characters is called a. rising action b. resolutionc. falling action d. conflict

D, because the conflict is the issue that needs to be resolved. Hope this helps!

Hello!

The correct answer to this question is D: conflict. 

The conflict is simply a disagreement, argument, or hostility between characters in literature. 

Rising action is the buildup of tension which later leads to the conflict. 
The resolution is when the problem/conflict has been solved. 
Lastly, the falling action occurs after the resolution. This is often when the plot begins to slow down. 

I hope this helps you! Have a great day!