<span>Technically you could have both influenza and bronchitis at the same time, but it is not likely. Influenza is the word for a respiratory infection caused by a virus whereas bronchitis is an infection specifically of the bronchi in the lungs. However, influenza is characterized by different symptoms from bronchitis due to the different systemic nature of influenza.</span>
Astronomy can best be described as a "<span>a. study of objects beyond earths atmosphere", although the subject of astronomy can be much more complicated. </span>
<span>Foreshadowing means B. hinting at things that will occur later. Sometimes authors may introduce a symbol or a character so as to show the readers that something awaits them in the following chapters, but he or she will not reveal immediately what that actually is. The other examples don't really make any sense and do not refer to what foreshadowing actually is.</span>
5.03x10^-3 I believe is the answer, but not sure. Hope this helps!
