The sentence that should contain commas to offset a nonrestrictive clause is:
Pizza, which is my brother’s favorite meal, is on tomorrow’s menu.
In this case, the clause "which is my brother's favorite meal" is nonrestrictive, meaning it adds extra information about the noun "Pizza," but it is not essential to the meaning of the sentence. The other sentences either contain restrictive clauses or do not need commas. Here’s a brief explanation for the rest:
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The book that I lost has Marci’s name in it. (The clause "that I lost" is restrictive; it specifies which book.)
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The girl whose book I lost is named Marci. (The clause "whose book I lost" is also restrictive.)
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The woman who is calling my name is my mother. (The clause "who is calling my name" is restrictive as it specifies which woman.)