Which choice contains a broad pronoun reference?
When you have written a paper, go back. Revising it will result in a more effective presentation.
When you have written a paper, go back and revise it, resulting in a more effective presentation.
When you have written a paper, go back and revise it, which will result in a more effective presentation.
When you have written a paper, go back and revise it. This will result in a more effective presentation.
When you have written a paper, go back and revise it. The result will be a more effective presentation.

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Hagrid
The sentence below contains a broad pronoun reference:

When you have written a paper, go back and revise it. This will result in a more effective presentation.

This is because the sentence states a cause and effect of the activity being described.