They correct answer is C: "Natalie watches a Presidential debate with her parents in order to complete a homework assignment for school". Because Natalie has two clear objetives, to do her homework as personal and to kwow issues or characteristics of the election process as a civilian person.
Answer:
The exchange of goods and services without the use of money
Explanation:
Difficulties with this may be:
Lack of a common measure of value.
Lack of fair exchanges
Lack of double coincidence of wants.
Difficulty in storing value.
A.The Roman empire relied on physical features as natural barriers.
Its a multilateral system of trading in which a country pays for its imports from one country by its exports to another. Hope this answers your question :)
In short and in general, formal language is the language you would use when talking to your boss or employes and informal language is the one you use when talking to a friends