Final answer:
The provided excerpts relate to performance arts and public speaking, which are commonly studied in English literature and arts subjects in high school. They explore themes of performance, expression, and audience engagement.
Step-by-step explanation:
The excerpts provided all cater to various scenarios in which performance, expression, and audience engagement play pivotal roles. These scenarios are applicable to English literature and arts subjects, where understanding character portrayal, themes such as joy and sadness through songs, and the dynamics of public presentation are analyzed.
In each example, there is an underpinning focus on how performances, whether they be on a talent show, through written essays, singing, or acting, influence both the performers and their audiences.
Active voice, as mentioned in one of the excerpts, is a grammatical construct taught in English language studies. Additionally, the process of conducting surveys, as in the mentioned active voice example, may fall under a statistics or social studies curriculum but is also relevant when discussing the reporting style in English writing.