Question

vi) Sheela will be selected for the competition only if she goes for the
auditions.
(Begin: Unless....)​

Answer 1

Unless sheela goes for audition she will not be selected for the competition.

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Answer 2

The sentence using the word "unless" is -

Unless Sheela goes for the audition, she will not be selected for the competition.

"Unless" word is used in the English Language, as a substitute for "if not".

It is used in conditional sentences, where it states the happening of an event if another event does not happen.

In this sentence, if Sheela does not go for addition, then she will not be selected for the competition. Here if first even does not takes place, then second too will not occur.