Answer:
I would say that the correct answer to the request: Identify the type of error in the sentence... would be, C. There are no errors in this sentence.
Explanation:
This is an example of a sentence with an adverb clause that explains and expands the information on the main topic, which is, why the person sang the song. Given the descriptions of these types of sentences, and looking at the grammatical structure, you can see that not only is the adverb clause placed correctly, but also the modifiers used are correct and expand the information correctly, without misleading the reader on what is provided. A reader easily understands that the subject "My", the action "singing the song" is clearly explained and its information amplified by the use of the adverb clause "because Brittany was ill", which is the correct structure for this type of clause, and also, all modifiers are correctly placed. There is no parallel structure here because this structure is applied for verbs used in sentences, to ensure harmony in tenses used, but in this short sentence, that does not apply.
