To discern which statement(s) weaken the argument presented, we must first understand the core argument of the passage: Although the overall brain size has not increased significantly, structural changes in specific brain regions have contributed to enhanced human intelligence and progress.
Now, we evaluate the given options:
1. Recent studies refute the hypothesis that region-specific brain development is necessarily associated with rapid human progress: This directly challenges the main argument, weakening the claim that structural changes in specific brain areas are linked to human progress.
2. Neanderthal people's extinction was probably because of their brain size: This does not directly relate to the argument about structural changes and human progress. It does not weaken the stated reasoning about intelligence.
3. Homo Sapiens and its destruction in the future may happen because of its rapid brain development: While it is related to brain development, this is more speculative about future consequences rather than contradicting past structural changes linked to intelligence.
4. Recent studies show that Neanderthal people, with relatively smaller brains, were capable of complex language and social activities: This statement suggests that smaller brains can still facilitate complex activities, but it does not directly refute the argument concerning structural changes driving progress.
Upon review, the only statement that effectively weakens the argument by directly disputing the claimed correlation between structural brain development and human progress is the first one. Therefore, the correct answer is:
Recent studies refute the hypothesis that region-specific brain development is necessarily associated with rapid human progress.
Eight students (P, Q, R, S, T, U, V, and W) are playing musical chairs. The figure indicates their order of position at the start of the game. They play the game by moving forward in a circle in the clockwise direction.
After the 1st round, the 4th student behind P leaves the game.
After the 2nd round, the 5th student behind Q leaves the game.
After the 3rd round, the 3rd student behind V leaves the game.
After the 4th round, the 4th student behind U leaves the game.
Who all are left in the game after the 4th round?

Here are two analogous groups, Group-I and Group-II, that list words in their decreasing order of intensity. Identify the missing word in Group-II.
Abuse \( \rightarrow \) Insult \( \rightarrow \) Ridicule
__________ \( \rightarrow \) Praise \( \rightarrow \) Appreciate
The 12 musical notes are given as \( C, C^\#, D, D^\#, E, F, F^\#, G, G^\#, A, A^\#, B \). Frequency of each note is \( \sqrt[12]{2} \) times the frequency of the previous note. If the frequency of the note C is 130.8 Hz, then the ratio of frequencies of notes F# and C is: