Question 10.

Based on the passage, the correct inference is: Option D - "natural language" refers to that stage of language development where no conscious human intent is evident in the formation of language.

The passage states that natural languages are "the result of human action, but not the execution of any human design," suggesting that they are not consciously designed or modified. Artificial languages and reformed natural languages, on the other hand, are described as introducing "design into their modifications or refinements," indicating that they are consciously modified.

The passage does not support the other inferences. In fact, it suggests that culture and tradition can be understood as subsets of institutions and have analytical, explanatory, and expository power when they are studied in this context. It also suggests that there are both informal and formal institutions, and that many institutions are a mixture of the two, rather than being mutually exclusive categories. The passage also does not imply that institutions like the family, rituals, governance, economy, and the military are natural and cannot be consciously modified; rather, it suggests that these institutions are the product of conscious attempts to mold and plan them, and that they can be modified through processes such as family law, established and disestablished churches, constitutions and laws, and so on [Options A, B and C].