I need help please What is the main idea of the last paragraph?
O Early matches were dangerous and awkward.
O John Walker made the first match.
O Phosphorus was the key to the modern match.
O Walker's match was better than what came before.

- "a nonrestrictive clause functions as a modifier to a noun (that is an object, person or concept). these clauses can be described by the following three options: it is set off by comas, it contains a subject and a verbs and it adds nonessential information to the sentence.

for example, in "here is bill gates, who confounded microsoft software company" we can identify "who confounded microsoft software company" as a nonrestrictive clause modifying the noun bill gates. this clause can be describes as a nonrestrictive clause because it is separated by a comma, it adds nonessential information to identify who bill gates is and it must contain both a subject (who) and a verb (confounded)."

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explanation:

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can you be a bit more specific