Answer:
Option C is correct.
The answer for the given expression is 0.
Step-by-step explanation:
Given the statement: Two times the difference of one-third of a number and three. and also variable given is 9.
Let x be the variable or number.
"One-third of a number" means 
Also, "difference of one third of a number and three " means 
Now, "Two times the difference of one-third of a number and three" means 
Then, the expression for the given statement : 
Substitute the value of x =9 in above expression we have;
=
=
= 0
therefore, the answer for the given expression is, 0