How do I include a hyperlink in the text?

The text below appears as an option which needs to be ticked (the last question in the form)

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Add a Text field to your form and click the Insert/Edit Link. Here's a sample screen capture:

If you're referring to Basic fields Label text or option text, it is not possible to add a Hyperlink text. 

I hope this information helps. If you have any questions, please let us know.