How many permutations are possible for 11 objects taken 7 at a time? 330
5,040
237,600
1,663,200

your list doesn't mention any of them at all.

and what does "these" mean anyway ?

no options provided, here,but the answer to this question is often: a historian cites a japanese newspaper article published a year after the end of world war ii in order to draw conclusions about the effect of the war on the japanese economy.

clearly from the answer, the historian alludes to historical sources,and records to aid in analyzing and drawing conclusion on the effect of the war on the economy of japan.

can not you sorry