By what age are children purposefully using smiling to communicate positive emotions? 6 months 1 year 18 months 2 years

6 months

Explanation:

6 months old babies do not have the ability to decide if something is funny or not. However, they do have the ability to smile when they want to show positive emotions. For example, they can make a lovely smile when they look at their mothers or when they are pleased about something. Babies communicate positive emotions with their smiles even before they can walk or speak.

answer; /// i believe that the correct answer is that it lets you see and evaluate different formats as you develop your workbook;

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answer: a federal government has final authority on interstate/inter provincial  and international affairs, a confederation is one where the central/national government or authority is governing body what does not have final say over the same matters. hopefully this and i will try again if you don't like this answer : )

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