| Clue | Source | Date |
|---|---|---|
| Leader of extremely evil sect corrupted chosen subjects (9) | ||
| Steel vice generates options (9) | ||
| Optional school courses | ||
| Optional courses | LA Times Daily | 13 Dec 2023 |
| Campus choices | New York Times | 15 Jul 2022 |
| What you don't have to take | Newsday | 07 Nov 2020 |
| Nonessential courses | Thomas Joseph | 14 Jan 2016 |
| They're never required | New York Times | 18 Sep 2015 |
| They're never required | ||
| They're not major requirements | ||
| Nonrequired courses | ||
| Science Botany etc. | ||
| Some courses | ||
| Optional courses | ||
| Certain college courses | ||
| College courses freely chosen. |