The answer is **all of the above**.
Wikipedia is a free online encyclopedia that anyone can edit. This means that unlike with traditional encyclopedias, authors of Wikipedia entries are not required to have expertise in the subject they write about. Anyone can change or edit an entry, and there is no formal fact-checking process. This can lead to inaccuracies and biases in Wikipedia entries.
However, Wikipedia also has a number of features that help to mitigate these risks. For example, Wikipedia entries are constantly being reviewed and edited by other users. This helps to ensure that inaccurate or biased information is eventually corrected. Additionally, Wikipedia has a number of tools and resources that users can use to verify the accuracy of information.
Overall, Wikipedia is a valuable resource for information. However, it is important to be aware of the limitations of Wikipedia and to use other sources to verify the accuracy of information.
Here are some additional details about the three statements:
* **Unlike with traditional encyclopedias, authors of Wikipedia entries are not required to have expertise in the subject they write about.** This is one of the main differences between Wikipedia and traditional encyclopedias. Traditional encyclopedias are typically written by experts in the subject matter, while Wikipedia entries can be written by anyone. This can lead to inaccuracies and biases in Wikipedia entries, but it also allows for a wider range of perspectives to be represented.
* **There is no formal fact-checking process.** Wikipedia does not have a formal fact-checking process. This means that anyone can change or edit an entry, and there is no one who is responsible for ensuring that the information is accurate. This can lead to inaccuracies and biases in Wikipedia entries, but it also allows for information to be updated quickly and easily.
* **Anyone can change/edit an entry.** This is one of the main features of Wikipedia. Anyone can change or edit an entry, regardless of their expertise in the subject matter. This allows for a collaborative approach to creating and maintaining Wikipedia entries. However, it also means that Wikipedia entries can be changed or edited by people who are not experts in the subject matter, which can lead to inaccuracies and biases.