Think of it like this
Internal: A force inside yourself
External: A force outside of yourself
So if there an external force, it’s a force from outside so an example would be bullying. You wouldn’t want to go where you are being bullied so that would be an outside force affecting you.
The answer is D homograph
"<span>Too much pride could lead to your downfall" is the theme of this classic story. This kind of lesson or theme can also be thought of as the "moral" of the story as well. </span>