In Line 4. Paragraph 3, the word "exacerbated" is most similar in meaning to" ______".

A．Theorists tend to look cool and irrational because of their disdain for the public speculation.
B．People consider theorists separately because they are the rare and fascinating species scientifically.
C．As a matter a fact, theorists are full of strong feelings and obsessed with their research.
D．It is suggested that we tolerate theorists not out of our sense of humanity but for our selfish interests.

A．chiefly for changing the world
B．just for challenging the status quo
C．primarily for the benefits of humankind
D．mainly for playing the game of science