Lars is writing a research paper on the Russian conquest of Siberia in the 16th century. Read Lars’s research question. "How was Russia able to also conquer parts of Poland in the 16th and 17th century?”

Is this research question effective?

Yes, because it can be easily answered.
Yes, because it states the topic of the paper.
No, because it is indirectly linked to the topic.
No, because it includes repetitive information.