Five-month-old Tracey is more easily soothed by her dad; she smiles and looks more at him than at others. Still, when Aunt Corrie comes for a visit, Tracey has no problem giving her a cuddle. Tracey is in the phase. A) preattachmentB) attachment-in-the-makingC) clear-cut attachmentD) working model

What does the ricardian theory state? a. countries should produce all goods and services if they canb. countries should not produce goods and services that minimize opportunity costsc. countries should import goods and services if they are cheaper in other countriesd. countries should export all goods and services if they make a profit