Answer: By practicing her speech, Laura's nerves calm down.
Explanation: Making a presentation is often a difficult thing for most people because the lack confidence presenting in front of a large audience. However with constant practicing one can over come the fear of public speaking. Also having positive thoughts boosts your advantage and confidence to speak to an audience.
Most people call her a level-headed student. That would be the correct answer, because level-headed is always hyphenated.
Answer:
O. B. Paine used empirical evidence to support his claim that howes army had decisively defeated the continental army