Final answer:
The central question regarding relevance and variables in the context of natural language is whether the relevance of propositions is normatively rooted in teleological aspirations.
Step-by-step explanation:
The central question regarding relevance and variables in the context of natural language is whether the relevance of propositions is normatively rooted in teleological aspirations. This means examining whether the significance or importance of a proposition is determined by its alignment with certain goals or purposes.
Variables in natural language are not inherently unrelated, as they can also play a role in determining the relevance of propositions.