Answer:
A - The Royal Opera House started the Thurrock Community Chorus to introduce opera to new audiences and help people in a culturally deprived area find their voices.
B - The choir became permanent after the success of the performance of a new opera, Ludd and Isis, inspired by Thurrock and using local singers and musicians.
C - People who have been ill benefitted from being in the choir by using it as therapy to recover from illness and boost their confidence. For example, Barbara Dawes, who is recovering from a stroke, said, "It has helped my confidence. I am working here in different languages. It's great."
Step-by-step explanation:
Use at your own discretion.