How might a flashback add complexity and interest to a story? - By revealing important events in a characters' past.
- By showing that the main character is keeping secrets.
- By hinting at important plot developments to come.
- By relieving the boredom the regular narrative.

Please make sure your answer is correct this is for an exam!!

By revealing important events in a characters' past.

Explanation: Flashbacks are moments in which the author goes back to the character's past and they help explain the reasons or the motivation a character has to do certain thing. The answer could also be the third one, but you can also accomplish the third one without using flashbacks, so, the correct  answer is the first one.  

a complex sentence consists of an independent clause and one or more dependent clauses.  

to write complex sentences, we must use subordinating conjunctions.  

all the complex sentences begin with a subordinating conjunction and when it occurs, a comma must be place at the end of the dependent clause. on the contrary, if the sentence begins with an independent clause, then no comma is used.

after  

although  

as  

because  

before  

if  

since  

when  

for example,  

after she won the competition, she became very popular.  

although my father was hurt, he continued fighting for his rights.  

as all of you got a ten, you will be able to leave early today.  

before he went to the war, he asked his parents to bless him.  

if it is cold, i won’t go out.  

since you didn’t bring the homework, you will get low grades.  

when it is hot in the town, everyone goes to the beach.  

so you can tailor your resumé to the position

would be the answer. hope this .