Fixed question stems with more than 4 answers making students unable to choose past the fourth answer.

[LaserBread]

Pull Request Template

Description

This change dynamically allocates the array the webpage POSTS to the server for question stem answer options based on the number of possible answers, fixing an issue where students would see an answer past the 4th option just disappear and them getting no credit.

Fixes #372

Checklist:

Before you submit your Pull Request, please make sure you have completed the following tasks:

• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• I have added tests that prove my fix is effective or that my feature works.
• New and existing unit tests pass locally with my changes.
• Any dependent changes have been merged and published in downstream modules.
• I have tagged my PR with the appropriate label(s).

[MigrainePanda]

No issue with useState only running on first render since questions won't change after render.

Looks good!