選択制

1. Origins, structure, and basic meaning

• Structure: 選択制 combines 選択, choice, with 制, system, and denotes an arrangement in which one selects from specified options.
• Basic usage: A program can 選択制になる, and a participant can choose under that system in 選択制で一つを選ぶ.

2. Common pitfalls and similar expressions

• System versus act of choosing
  • 選択制 names the elective arrangement itself, not the individual act or option selected.
• Scope of application
  • 授業の一部が選択制 makes only part of the curriculum elective and must not be expanded to every class.