Question

The sound which can be pronoun ced on ly with the help of a vowel is kn own as​

Answer 1

Answer:  consonants sýmphōna

Dionysius Thrax calls consonants sýmphōna (σύμφωνα, 'pronounced with') because they can only be pronounced with a vowel.

Corrected Your Sayings:  The sound which can be pronounced only with the help of a vowel is known as​

Answer 2

A,E,I,O,U are the vowels used in the subject English ,eg :- Umbrella,Ant, ice