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.

the correct answer is the following.

one of the groups i belong to is the boy scouts. this is a problem-solving group because it has tasks that we need to solve in order to other people in different activities such as the rescue of lost pets, or elder people in need.

the other group i belong to is kids pro environment, and is an information-sharing group that tries to create conscience about the risks and problems that generate pollution in our cities. we share information to other students and parents on the importance of keep our communities clean and our skies clear.  

i   believe   the   answer   is   d