The physics study guide is here; look for media response to find information about the nature of the task.
Basically, you have to respond analytically to one or media articles. This means that you have to read the article, and consider the issues raised and present a summation of your own position in response to the articles. Your response must be scientific; this means that instead of stating opinions, you must consider the science that you have learned and explain its relevance to the issues you are addressing.
The articles you are responding to are here.