Which option was used to revise this sentence? i can't think of how my life could be any better. wow, how could my life be any better!
changed to a question, exclamation, or command
b.
added introductory words or phrases
c.
moved parts of the sentence around
d.
reversed the order of subject and verb

A, changed to a question, exclamation, or command.

Explanation:

The text reads "Wow, how could my life be any​ better!", which is not correctly written. When asking a question, you must have a question mark at the end.

A. Changed to a question, exclamation, or command.

Explanation:

Exclamation marks are used to indicate shock or surprise. They help the reader realize that he/she should add emphasis to a sentence.

The idea is not to use them in excess so they can have a stronger impact. In other words, the less their are implemented the more powerful they are. The recommendation is not using more than one in the same text.

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.  

do your own work !