Topic and purpose and attention-getting material are all components of the : D. introduction
in
the introduction, the writer most commonly use it to attract the
attention of potential readers that have their interest align with the
study So, a writer usually write what study that he want to conduct ,
how they're doing it, and why they're doing it within the introduction
part.
"The black snake" the speaker feels sympathy for the snake once it is killed. " A Narrow Fellow in the Grass" the speaker feels anxious about the snake.