Explanation: Standar English is the dialect of English language that is used as the national norm in an English-speaking country, it is an English that respects spelling, grammar, pronunciation, and vocabulary. From the given sentences, the one that uses standard English is "They bought themselves a new car" because "themselves" is the correct form of the reflexive pronoun in plural (reflexive pronouns are: myself, yourself, himself, herself, itself and themselves), the word "theirselves" is incorrect.
A metaphor is a figure of speech that compares two different things that are not alike but have something in common. Therefore, the answer is choice "B"
They are techniques used to build logical support for an argument. They make nonfiction writing more entertaining. They are rhetorical devices used for persuasive effect