Which concept is suggested by theories like String Theory or Loop Quantum Gravity to replace the singularity?
Answer
A continuous physical description, perhaps approaching a minimum volume state
Advanced theories explore replacing the singularity entirely with a continuous physical description, suggesting the pre-Big Bang state involved quantum gravitational effects leading to a minimum, rather than zero, volume.

#Videos
What Was There Before The Universe? - YouTube
Brian Cox - What Was There Before The Big Bang? - YouTube
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