The first pair, fourth pair, and fifth pair can be used to contrast the careers of writers and editors.
(this goes for the picture u have put in. if you need me to choose from the text you listed i can also do that) Hope that helped, if you don't understand, you can comment below and i'll edit it.
Answer:
C. A statistician
Explanation: because the other are besides that job
C) topic
Usually you do not repeat the title in the paragraph it is normally the topic. When you repeat the topic it is when you need to remind the reader what you are talking about or how something relates to what is happening.
