An expression designed to call something to mind without mentioning it explicitly; and indirect or passing reference.
An index is an example of A.) A primary source
Hope this helps!
Answer:
okay guys doing some research and some thinking ,i found out what where the awnser c,d,d,a,d,b,c
1-C
2-D
3-D
4-A
5-D
6-B
7-C
hoped i helped plz mark brainiest
Explanation: