The prevailing perspective posits that language emerged primarily for the exchange of factual information. In contrast, an alternative viewpoint suggests that language originated to foster social bonds, thereby ensuring human survival.
Option C effectively encapsulates these two core viewpoints without veering off the discussion.
Option A presents both viewpoints but introduces a distortion by implying a shift in perspective from past beliefs to current scholarly views, which is not the case.
Option B fails to address the essence of the debate on language origins and instead focuses on its evolution to higher forms, thus misrepresenting the key focus.
Option D erroneously suggests a conflict among experts regarding these viewpoints, whereas the author simply presents them without indicating any challenge between them.
So, the correct answer is (C): Most believe that language originated from a need to articulate facts, but others think it emerged from the need to promote social cohesion and cooperation, thus enabling human survival.
The passage given below is followed by four summaries. Choose the option that best captures the essence of the passage.
In investigating memory-beliefs, there are certain points which must be borne in mind. In the first place, everything constituting a memory-belief is happening now, not in that past time to which the belief is said to refer. It is not logically necessary to the existence of a memory-belief that the event remembered should have occurred, or even that the past should have existed at all. There is no logical impossibility in the hypothesis that the world sprang into being five minutes ago, exactly as it then was, with a population that "remembered" a wholly unreal past. There is no logically necessary connection between events at different times; therefore nothing that is happening now or will happen in the future can disprove the hypothesis that the world began five minutes ago. Hence the occurrences which are CALLED knowledge of the past are logically independent of the past; they are wholly analysable into present contents, which might, theoretically, be just what they are even if no past had existed.
For any natural number $k$, let $a_k = 3^k$. The smallest natural number $m$ for which \[ (a_1)^1 \times (a_2)^2 \times \dots \times (a_{20})^{20} \;<\; a_{21} \times a_{22} \times \dots \times a_{20+m} \] is: