Which is the best correction of the clause fragment?

while she was making a pot of soup.

a.
change "while" to "when"

b.
delete the word "while."

c.
change "she" to "karen"

d.
add a comma after "while."

What is the best definition of detonation a.) the meaning of the word in a different language b.)the dictionary meaning of the word c.) the additional meaning that comes from the feeling one gets from a word d.) the meaning of irony