Question

Who is primarily credited with developing the modern system of cardinal vowels?

• A. A. J. Ellis
• B. A. M. Bell
• C. Daniel Jones
• D. Henry Sweet

Answer 1

Answer:

C. Daniel Jones

While A. J. Ellis and A. M. Bell laid early groundwork (Ellis in 1844 and Bell using the term cardinal in 1867), the system became fully developed and widely accepted only after Daniel Jones introduced it during his time at University College, London, around World War I. He designed the system for teaching and phonetic research.