noun which may take the genitive case particle 'no'
Used attributively with nouns like 問題 (question), テスト (test), or 方式 (format).
この試験は多肢選択方式です。
This exam is a multiple-choice format.
多肢選択問題に答えるときは、正しい選択肢を一つ選んでください。
When answering a multiple-choice question, please choose one correct option.
Compound of 多 (many), 肢 (option/limb), and 選択 (choice/selection). The term is a modern coinage for 'multiple-choice'.