Answer:
d.
Explanation:
well, it restates the beginning in a flowing/ easy to read way and it breaks the sentence down to a way we can understand in this day and age.
Exclamatory (ends with an exclamation point).
Answer:
Yes, it is a good idea. It's even better if you know the most commonly used language of whatever place you are traveling to. Like if you were to travel to France it's a good idea to be fluent in French.
A has the most correct punctuation
Answer:
In economics, the total revenue test is a means for determining whether demand is elastic or inelastic.
Explanation:
If an increase in price causes an increase in total revenue, then demand can be said to be inelastic, since the increase in price does not have a large impact on quantity demanded.