The store of vocabulary which a speaker can use with facility constitutes his

• A. Lexicon
• B. Repertoire
• C. Vocabulary
• D. Corpus

Answer: (B)

The resources a speaker can mobilize to use language fluently are best described as a repertoire. This term captures not just knowledge of words but the ability to access and deploy them in real communication, along with other linguistic skills, in flexible and fluent ways. The idea of a “store of vocabulary” points to the words themselves, but the emphasis on facility—being able to use them smoothly across contexts—fits repertoire, which encompasses both knowledge and practical use. A lexicon is the mental dictionary of words and their meanings, which is part of the broader repertoire but not the whole thing. Vocabulary refers to the list of words, without necessarily signaling how readily or fluently they can be used. A corpus is an external collection of language data used for analysis, not the individual’s internal resources.