All of the answers listed were correct except choice 9 and 10.
The answer to number 9 is actually D. Pareja and to number 10, B. Discutir.
Tarea difícil translates to difficult task/homework.
That means Paula is the grandmother of Robert. Roberts is the cousin of Paula. Paula is the cousin of Robert. Paula is the aunt of Robert.
Hope this helps
b) redacte un parrafo con idea principal dedictiva con una idea secundaria que de una explicación
ella es mi amiga
I don't know if you wrote it wrong