d. working with other experts damages your credibility.
Explanation:
It is not true that working with other experts damages your credibility. When a person is researching a particular topic, he is usually recommended to get his information from experts. This can be done through research on written texts, but it can also be done by collaborating with experts and getting that knowledge first-hand. This can significantly increase your credibility. However, it is important to always cite the source of your information and give credit to people who collaborated with you.
