Answer: B. It gives background for the more practical information on volcanoes that follows.
Explanation:
There is no passage attached nor referenced as such I could not find it. The above option however, should be the answer.
When a section of a passage gives background information about what is to follow, it lays the groundwork and gives the reader context about what is being described thereby making the essay clearer. Option B is therefore the most probable answer.
The answer would be third-person omniscient because a third person point of view uses words such as he, she, they, it, etc. It is not third person limited because third person limited only gives the point of view of one character in third person.
