Simple sentence is the answers
Olivia should add WHY she wants a health career in a hospital. She mentions that she 'realized she wanted to specialize in health care administration during a summer internship' - but not WHAT happened to make her feel that way.
When giving an elevator pitch, it's always a good idea to add a relevant story - make them relate / care about you a bit more.
The answer is:
C. What type of dog food has the best nutrition for dogs.
This is because, unless instructed, dog walkers will generally not feed the dogs they walk, thus they shouldn't give information about it to you; it's not reliable information.
In the conclusion! This is because its usually seen at beginning of a paragraph
