Take a look at the item again:
When the cell phone began to chime in her book
bag, (A) Jasmine froze
in her seat (B)
as all eyes in the room darted from her to Mr.
Williams. (C)
A professor who tolerated no interruptions during a lecture.
You wanted to do this:
When the cell phone began to chime in her book
bag. Jasmine froze in her seat as all eyes in the room darted from
her to Mr. Williams. A professor who tolerated no interruptions during a
lecture.
A period after bag makes a fragment. When the cell phone began to chime in her book bag is a subordinate clause and cannot stand alone as a complete sentence.
You might want to review the rules.
Go back to the sentence to try again.