Question

The subject of an article cannot automatically limit which of these?

Answer 1

What are the answer choices?

Answer 2

effectiveness
timeliness
audience
purpose

this is a little hard to explain, but let's start by eliminating some choices - the subject (or topic) of an article *can* limit timeliness (certain subjects will take longer to write, and the subject can affect how long the article stays relevant)
I can also eliminate audience, as the subject will affect what audience will be able/willing to read about the topic

so between effectiveness and purpose, which one does the subject affect less?