Is it possible to submit a blank page to Sophia

[RJ77]

From Sophia Student guide: "Complete each Touchstone with a score of at least 50%.
"
From student guide with more perspective of all requirements:

"HOW IT WORKS
To earn a Sophia transcript, you must:
• Complete each Challenge by attempting each of the questions.
• Achieve a total average score of 70% or better across all Challenges, Milestones, and Touchstones.
• Complete each Touchstone with a score of at least 50%.
• Complete your Final Milestone, which contributes to your overall course score.
"  
Unless I understand it wrong it requires, at least in theory, a 50% in the touchstone. Check the Rubric to be sure you get the 50%.

No minimum required for the touchstones:

While there is no minimum required score on an individual Touchstone, keep in mind that you must complete each Touchstone as well as achieve an average score of 70% across all assessments to pass the course. You will be given one opportunity to redo each Touchstone if necessary to improve your score.