Choose your answer from:
i. Classical singing requires that you perform greater breadth in your singing to fit the broadway opera style. Additionally, classical singing does not have to be a full-scale opera, but it should still go into action.
ii. This will help you improve your singing voice and tone level and will help you be the best singer you can be. Here are some more ideas for classical singing : Stay healthy and clean.
iii. Learning to do this requires the assistance of an excellent teacher. The national association of teachers of singing directory can help you find one.
iv. Classical opera musicians are very adept at improvising opera verses and at positioning and gliding. Classical singers can produce many beautiful sustained solos that do not require a significant expertise in other genres.Choose from options above and answer: What most naturally follows?

How to sing opera 
Learn about classical singing. 
Classical singing technique optimizes the range, resonance, power, and vibrancy of your voice. Classical singers perform unamplified and access a much wider range than singers in most other genres.
Answer:
iii.