The following sentences form an essay. Proofread them for consistency, parallelism, and concise language. Select the letter of the error in each sentence. They used this soap for bathing and also to cleanse wounds.

A) consistency
B) parallelism
C) concise language

The sentence is not parallel because the verb used for bathing is in the past tense while the verb used for cleansing wounds is in the infinitive form. To make it parallel, we can change the second verb to past tense or add "to" and make it an infinitive phrase. For example: "They used this soap for bathing and for cleansing wounds" or "They used this soap to bathe and to cleanse wounds."