Read the two passages. Passage One Our school’s mission statement stresses community, cooperation, and personal and intellectual growth. But one of our school’s practices—selecting a valedictorian, or the student with the highest rank in the graduating class—does not support our mission. This practice is divisive, unfair, and archaic. So let’s end it now! Passage Two It is only with great care that administrators consider implementing any system-wide changes to their mission statements. Administrators carefully craft these statements to reflect their school’s fundamental and philosophical approach to education. They take great care in making sure that this mission statement is educationally sound. Based on these two passages, which statement is true? Neither author is open or receptive to opinions contrary to his or her own. Based on an examination of word choice, it is evident that the author of the first passage is someone in administration, while the author of the second is not. Based on an examination of structure, it is clear that both authors reveal their viewpoints most clearly in the last sentence. Both authors are in support of the mission statement.
The answer to your question would be that in the sentence the word singing functions as the subject.
The subject of the sentence is the person, thing, or idea that is doing or being something. In order to find the subject of the sentence, first you need to identify the verb. Then, you ask the following question: Who or what “verbs/verbed”? (what did improve after he took voice lessons?) The answer to that question is the subject (Evan’s singing).