Final answer:
The provided context does not directly answer the question regarding Ned's social group's views on money discussions versus politics, religion, personal relationships, or health.
Step-by-step explanation:
According to Ned's social group, talking about money is often considered more taboo than many other sensitive topics. It is not specified which of the given options is regarded as worse; the context given doesn't refer specifically to the options like politics, religion, personal relationships, or health. However, the reference material talks about the touchiness of personal decisions, especially regarding reproduction and the impact these have on societal aspects such as population. This can be somewhat related to personal relationships but isn't focused on financial discussions.
Discussing subjects like money can evoke strong emotions and opinions, as it may invoke a sense of privacy or lead to judgments about someone's lifestyle or choices. Ned's social group appears to value discretion on this topic, potentially more than discussions about other personal and sensitive issues.