<p><sup><sub>In the interest of taking a decision, I will post a few answers for you to vote on. Please feel free to post more. </sub></sup></p>
<p><strong>Option 4: Vote to close threads as duplicate</strong> of <a href="https://stats.stackexchange.com/questions/247871/what-is-the-root-cause-of-the-class-imbalance-problem">What is the root cause of the class imbalance problem?</a>.</p>
<p>*Not just new threads, but also the other threads in the question.</p>
