I would go with default. Dictionary and library do not really make sense in this circumstance. Default suggests a pre-selected option chosen by the database, which makes the most sense in this situation.
C. Through Gregor's transformation into a hideous bug
Answer:
B. a summary of the essay’s main points
D. a rephrasing of the thesis
E. a mention of other texts that support the thesis
Explanation:
A is incorrect. A quotation would not make it a strong conclusion by itself, but an explanation along with the quotation would help.
C is incorrect. A commentary on the supporting evidence wouldn't provide any content to make a strong conclusion. It just won't.
I think and this is my opinion that C. is the answer
Theoretically, mainstream media is supposed to show us the most important news only, but generally this idea has been less trusted. Mainstream media is made by huge corporations that receive enormous amounts of money (sometimes from governments, sometimes from private businesses, but always from someone with interests) and often report news in a way that can be considered not completely honest or neutral.
Independent media is supposed to be a response to that. Many claim to be free from that problem because they do not receive that money. Some claim to be neutral, but many claim to be left or right leaning so people will know upfront that their news also carry their opinions with it.