When caring for their babies, mothers devote more time to and fathers devote more time to

Iwould say the answer is: physical care and playful interactionshope that : )

In the Wealth of Nations, Adam Smith makes the case for comparative advantage or the production of goods by nations or peoples which they are best at and trading for the goods with a higher opportunity cost. Therefore, he would say that a nation should diversity when it can to use its resources to produce goods and services more efficiently than other nations and also that nations should export and import as many different types of goods as possible.