Based on this sentence stated above, I would actually say that this statement would be known to be (neutral) mainly because there would be (NO) emotion to this sentence stated above.
When considering whether a sentence would be positive or neutral or even negative, we would want to consider the tone of the sentence and ponder over certain aspects that would be given in these kind of sentences. This would be why your answer would then be (neutral).
Answer: the speaker most likely means that his/her voice/ song lyrics is hers/his.
Explanation:
If either useful or obsolete are underlined words, the correct answer is B) predicate adjective, because those are adjective, they cannot be nominatives because they are not nouns.