| This level is a major plot point!
This level is a major level in the game. After you finish the level, you may be able to access other characters, minigames, and tunnels. Most of them also include a cutscene.
Note: Since you must use the Student to pass this tunnel, there are no other suggested characters.
The fact that you have to use the Student shouldn't be too hard for you since you must have already known how to use her during the Bridge Building minigame. Therefore, this should not be too challenging.
But be careful. This level is quite hard, and the gaps are large. Make use of the special abilities of the Student, and change gravity when needed.
In this way, you may pass this level with ease.
There is a cutscene featured in this level. More information on this cutscene can be found here.
Morning Hypothesis (Part 1) Edit
After beating Level C-1, we see the Student sleeping between Level C-2 and Level C-3. She then wakes up to grab a green "something" from her backpack, and saying "Good Morning, universe!" After that, "Now for my practice hypothesis... What should I test today?"
Strangely, the gap between this level and the next is unusually small. The cause is still unknown.