Answer: Yes; including other possible viewpoints in your position paper makes your paper stronger because it shows that you have fully considered the issue and that you understand and respect its complexity.
The inclusion of other viewpoints shows the strength of arguments, depth of research, and comprehensiveness of the issue. Thus, it is advisable to include it in a position paper. The other options are not correct as:
Yes; including other possible viewpoints in your position paper is good because it shows that there are other possible positions on the issue, but that is only part of the reason
No; including other possible viewpoints in your position paper is not good because then your readers might choose to believe in one of those opposing viewpoints rather than your position is not sufficient argument because the purpose of position papers is not to influence the opinion of others
No; including other possible viewpoints in your position paper is not good because it will alienate readers who agree with your position on the issue is not a sufficient argument because the purpose of position papers is not to consolidate the opinion of others
Explanation: