To accurately determine which of the provided ideas the evidence from the excerpt supports, I would need to reference the specific details contained in that excerpt. However, based on the general context of Nellie Bly's investigation, the following could apply:
- If the excerpt discusses how overwhelmed psychiatrists were with the number of patients and how that affected their ability to care for them, it would support the first idea.
- If the excerpt indicates that psychiatrists were aware of Bly's investigation and were making efforts to improve their practices or hide their actions as a response, it would support the second idea.
- If the excerpt highlights a lack of concern from psychiatrists towards their patients, it would support the third idea.
- If the excerpt mentions efforts made by psychiatrists to prevent negative information from being published or reaching the public, it would support the fourth idea.
Please provide the specific excerpt or key details, and I can help you pinpoint which idea is best supported by that evidence.