1 collective security and deterrence
2 protects an individual’s rights to possess a firearm
D. There were middlemen for them, as trading was quite common between the groups.
<span>The greatest example of Humanism was an individual - Erasmus of Rotterdam (c. 1466-1536). Humanism influenced the growth of learning by "abandoning medieval pieties in favour of a rich new vision of the individual's potential."</span>
"<u>Single-source tracking</u>" is the "posttest method" used in "broadcasting commercials".
<u>Explanation</u>:
Single- source tracking is a post test which means this test is taken after a specific advertisement is out in the market. This method is basically used to know the reactions, and views about the products or services intended through those commercials. Consumers present in the television set or any supermarket checkout counter or any place where they go through this test, where the assigned people look after the consumers to know their reaction by tracing it from their face.