The job function of a news commentator is most similar to that of an:
a: educator
b: scientist
c: editor
d: researcher

The job function of a news commentator is most similar to that of an editor.

Explanation:

A news commentator is that person that we can see on the news that, besides presenting the news, coordinate interviews, can present their opinions on the subject, coordinate the order that the news will be displayed, besides writing, producing and even editing the news. that will be displayed. Some of these responsibilities can also be done by the newspaper editor who is also responsible for creating news in magazines, newspapers, TV, working with social media, also working with image editing, cropping and image processing of products, following up of the production steps

For this reason, we can say that, among the options given in the question above, the job function of a news commentator is more similar to that of an editor.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.