Boolean searching:
Most searches will return too many or too few records. It takes a long time to look at hundreds of records. By putting a little effort into constructing search strings (what you type into the search box) you can save a lot of time. The database can do a lot of work for you if you take the trouble to add a little sophistication to your search strings.
To do this with databases you need to know about the Boolean system. By the use of a few simple linking words, called operators, you can make your searches much more precise.
Answer:
I believe its C.
Explanation:
From the passage it seems that he's starting to look sicker and sicker.
A clause has a subject and a verb, so
1) "parade" "began"
2) "she" "loves"
3) "she" "went"
4)
5) "today" "rained"
so by this logic 4 wouldn't be a clause because it has no identifiable subject or verb
Participle phrase using a present verb phrase