Lorne is writing his band instructor to explain why he believes the band should offer private lessons in addition to the normal classroom instruction. Which sentence is a good reason to include in his letter to the band instructor? A.
Private lessons could be offered after school and before school.
B.
Mr. Corac teaches English, but he is trained in classical music.
C.
Private lessons mean added practice which will make the band play better together.
D.
Private lessons include training in reading music, as well as playing music.

C. Private lessons mean added practice which will make the band play better together.

Explanation:

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.