Per capita GDP of a country is the total quantity of goods produced divided by the number of citizens
I believe the answer is D. secure attachment.
It would be easy if you knew the difference between secure and insecure attachment: according to research, a child with insecure attachment will avoid or ignore the caregiver and a child with secure attachment feel protected by their caregiver.
If Sandra clings onto her mother's skirt, it shows that she feels like her mother will protect her from strangers.
I haven't read it, but it received pretty good reviews. I'd say go for it. Borrow it from the library and if you don't like it you can just return it. The only thing you have to lose is a little bit of time.
Hope this helped :)
States in the last 100 years have increased, hope this helps :)!!