Those types of dogs are called Avalanche Rescure Doggies
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.
Intrinsic motivation is a motivation "from inside", with internal, rather than external awards.
Three of the things you mentioned have an external reward: the 500 Dollar prize( first option), the credit (third) and the hope of winning a blue ribbon (the last).
Only the second one has an intrinsic motivation: that you will be happy about performing this song (feeling proud of yourself, etc).