In this case the word "infringed" means "<span>violated," since indeed it is restricted in the sense that there are certain firearms that people are not allowed to possess. </span>
The correct answer is "It's a primary source because it's firsthand information".
When we're presented with a statistical study of a certain topic, we're dealing with hard facts. A statement addressing "Percentage of College Degrees Awarded to Women" isn't making any assumptions on the matter and the tone of the phrase is neutral as opposed to personal (like you would find in a diary for example). Also, it's not an opinion that someone is giving through speech, but rather the expression of a mathematical calculation that someone made through the observation of certain data firsthand. That's why it is a primary source.
Hope this is helpful!
Your answer is William Marbury.
Stalin pushed Roosevelt and Churchill to open a second front in France to relieve the pressure applied by the German forces on the Soviet Union. Large percentage of German troops and military strength was focused on the Soviet Union and Stalin wanted to reduce the number of German troops by pushing the US and Great Britain to open a second front in France.
