Question

My brother who is a superb actor will audition tomorrow for a film role.

How should the writer punctuate the underlined nonrestrictive clause in order to emphasize it?
A) My brother: who is a superb actor will audition tomorrow for a film role.
B) My brother; who is a superb actor; will audition tomorrow for a film role.
C) My brother who is a superb actor, will audition tomorrow for a film role.
D) My brother—who is a superb actor—will audition tomorrow for a film role.

Answer 1

The writer should punctuate the underlined nonrestrictive clause in order to emphasize it as it in D: My brother —who is a superb actor —will audition tomorrow for a film role.

Nonrestrictive clauses can be offset with commas, parentheses and dashes. The em dash, traditionally the width of a capital letter "M", is used to indicate a pause or an emphasis. What is more, it brings clarity to a sentence.  So, the writer should definitely use the dash.

Answer 2

The way the writer should punctuate the underlined nonrestrictive clause in order to emphasize it is D: My brother —who is a superb actor —will audition tomorrow for a film role.

What is a Nonrestrictive Clause?

This refers to the type of clause which gives extra information about a particular thing.

With this in mind and from the given sentence, we can see that there is an expression of the audition of her brother for a movie role and a nonrestrictive clause is used and can be eliminated by the use of commas, parentheses and dashes

Read more about nonrestrictive clauses here:

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