<span>The purpose of tragedy is to produce catharsis or release of negative emotions from the audience. Within greek tragedies, peripeteia often occurs, which are swift reversals of fortune. Anagnorisis, where a character of the play makes an very important discovery, can have a profound impact on the main character. Ruination typically marks the conclusion of Greek tragedies, with the final act of the protagonist's downfall and failure.</span>
The denotative definition of a word is its literal meaning. This would be the meaning one would find in the dictionary.
By contrast, the connotative definition is the meaning associated with the word. It is the implied meaning of the word.
For example, the words in bold have the same denotation but different connotations:
-- a beautiful woman
-- a handsome woman
-- a pretty woman
While all these words mean the same thing, they do not have the same associations.
Either dentist or dentistry
I would choose a. Simply because the author talks about it as if it's all that really ever existed and that nature cannot take over what it is not. However, it goes on about seeing how erosion and rot can affect such things and tries to compare it to things in nature as if it were nature itself.