Medias' responsibilities in a democracy

It has played a very important role in shaping human minds.
It is through the media that politicians are reminded about their unfulfilled promises at the time of elections. The excessive coverage by T.V. news channels during elections helps people, especially illiterates, in electing the right person to the power. 
Television and radio have made significant achievements in educating rural illiterate masses and making them aware of all the events that are taking place in their language
The media also exposes the loopholes in the democratic system, which ultimately helps the government to fill the vacuums of these loopholes and to make the system more accountable, responsive and citizen-friendly.

which of the following is a subsurface event that takes place during the rock cycle?

  cementing  erosion  melting  weathering