A main reason why Wikipedia should NOT be cited as a source in academic assignments is: 

The articles are outdated.  

The articles include political bias.  

Anyone can contribute to the articles.  

The articles cover narrow or limited topics

All of the above reasons are valid explanations as to why Wikipedia should not be cited as a source in academic assignments.

There are several reasons why Wikipedia should not be cited as a source in academic assignments. One main reason is that the articles on Wikipedia can be outdated. Since anyone can contribute to Wikipedia, the information may not always be up to date and reliable.

Additionally, another reason is that the articles on Wikipedia include political bias. Since contributors come from various backgrounds with different perspectives, there is a possibility of bias in the articles, which is not ideal for academic research.

Furthermore, anyone can contribute to the articles on Wikipedia. This means that the information may not be rigorously reviewed or fact-checked, leading to inaccuracies or misinformation being presented.

Lastly, the articles on Wikipedia often cover narrow or limited topics. Although the breadth of information on Wikipedia is vast, the depth and quality of information on certain topics may not meet the academic standards required for reliable sources.

Considering these reasons, it is generally recommended to use more authoritative and reliable sources for academic assignments.

The correct answer is: The articles include political bias.

Wikipedia is a popular online encyclopedia that allows anyone to create and edit articles. While it can be a useful starting point for research, it is generally not recommended to cite it as a source in academic assignments. Here's an explanation for each of the options:

1. The articles are outdated: One reason why Wikipedia may not be suitable for academic assignments is that the information on the site can be outdated. Since anyone can edit articles, there is a risk that the information may not be current or up-to-date. Therefore, it is always better to verify information from more reliable and reputable sources.

2. The articles include political bias: One of the main reasons why Wikipedia is not commonly cited in academic work is because the articles can contain political bias. Since anyone can contribute to Wikipedia, it's difficult to ensure that the content is neutral and free from personal opinions or agendas. In order to maintain objectivity and credibility, academic sources with rigorous editorial processes are generally preferred.

3. Anyone can contribute to the articles: Another reason to be cautious when citing Wikipedia is that anyone can contribute and edit articles. While this allows for the collective wisdom of many individuals, it also opens the door for potential inaccuracies or vandalism. Without a system for strict quality control, the information on Wikipedia must be critically evaluated and cross-checked with other reliable sources.

4. The articles cover narrow or limited topics: This option is not the main reason why Wikipedia should not be cited as a source in academic assignments. While it is true that Wikipedia might not cover all topics in equal depth, it can still provide a starting point for research and present a general overview of a subject. However, it is always necessary to consult additional, more authoritative sources when writing academic assignments.

In summary, the main reason why Wikipedia is not suitable as a cited source in academic assignments is that the articles often include political bias. It is important to use more reliable and credible sources that have undergone rigorous editorial processes in order to maintain the integrity and objectivity of academic work.