The best example of a primary source among these options that you've mentioned is an interview with her dad who is a Vietnam veteran. She can get all the details she needs from a person who was actually there.
Do Piggy. I will talk to you on Monday about it?
By placing posters to say "Treat the animals with care" to places so the people will know
1) You know my sister,don't you?
2)We don't need to go to the store today,do you?