Are natural languages neutrally, positively, or negatively biased? that is the question a recent study1 set out to answer. they found the top 5000 words used in english in each of four different places: twitter, books on the google book project, the new york times, and music lyrics. the resulting complete list was 10,222 unique words in the english language. each word was then evaluated independently by 50 different people, each giving a rating on how the word made them feel on a 1 to 9 scale where 1= least happy, 5= neutral, and 9= most happy. (the highest rated word was "laughter" while the lowest was "terrorist.") the distributions of the ratings for all 10,222 words for each of the four media sources were surprisingly similar, and all had approximately the shape shown in the following figure.

recent brain research has shown some surprising benefits as a result of formal musical training. learning to play a musical instrument appears to develop parts of the brain that can even influence academic results. the studies indicate that the earlier a child begins training, the more benefits there are. one such study showed that children who began musical studies before the age of seven had a more developed brain in the region where language production and auditory processing take place. scientists believe there is mounting evidence to show that early musical training can improve brain function.

explanation:

from the count of monte cristo there are two synonyms of the word “grotto”. these words are chamber and cavern.

the answer is b. the tomb is underground and dark, and its opening is covered by a heavy grate.

i think the answer is second