To solve this question, we need to select the most appropriate word that fits the context of the sentence: "The ........ argument put forth for not disclosing the facts did not impress anybody."
The key phrase here is "did not impress anybody," indicating that the argument presented was likely flawed or misleading in some way. Let's evaluate each option:
- Intemperate: This word refers to a lack of moderation or self-control, especially in opinions or actions. While it suggests being excessive, it does not imply the argument was misleading or false.
- Spurious: This term means false or not genuine. While it indicates invalidity, it is different from appearing credible but being misleading, which the context suggests.
- Specious: This word means superficially plausible, but actually wrong. It perfectly suits the context where the argument may seem convincing on the surface but fails to withstand scrutiny.
- Convincing: This would imply the argument was persuasive and effective, contradicting the context where nobody was impressed.
Based on the meanings, "specious" is the most fitting choice, as it describes an argument that may appear correct or good at first glance but lacks real substance upon deeper inspection. Hence, the correct answer is:
Specious