Which Tsimshianic language, spoken by fewer than 200 people mainly in northwestern British Columbia, uses a complex system of glottalised consonants and a four-way vowel length distinction?

• A Nisga'a
• B Haisla
• C Gitxsanimaax ✓
• D Heiltsuk

Gitxsanimaax (or Gitxsan) is a Tsimshianic language of the Skeena River region with a rich phonological inventory including ejectives and phonemic vowel length.