Okay so I'm not sure exactly if this is talking about primary or secondary sources, but if it is then I'm fairly certain that this would be a secondary source since the student wasn't there to witness it, they're relying on their research to give them information.
Answer: Target market
Explanation: The target market simply mean a group of people within an environment in which the goods produced and services rendered by a particular organization is aimed. The organization identifies their target market on the basis of characteristics such as sex, age, race, cultural inclination and so on. After identifying the target market, the organization designs and implements their goods and services based on the needs of the targeted consumers and ultimately results in mutually beneficial investments for both parties.
A) magma chamber
Explanation:
the hot magma can push through anything without any problem, and it can crack through the earth's crust easily. also source: trust me or not.
Amenica capitalism multiple polaris to the care politis
