2. choose the sentence that does not contain a parallelism error. a. you need to be able to speak, to read, and to understand spanish in order to be an interpreter. b. you need to be able to speak, read, and to understand spanish in order to be an interpreter. c. you need to be able to speak, reading, and understanding spanish in order to be an interpreter. d. you need to be able to speak, to read, and understanding spanish in order to be an interpreter.

In order to achieve parallelism, all the structures in a sentence have to follow the same grammatical structure. Usually parallelism is detected in the verb tenses used in the sentence, or in the grammatical structure of the items of a list. In this case, the sentence that does not contain a parallelism error is A: You need to be able to speak, to read, and to understand Spanish in order to be an interpreter. All of the items of the list follow the infinitive form of the verb. The rest of the sentences are incorrect because at least one item of the list is grammatically different from the rest.

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the answer is a.

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