Answer:
Option A is correct.
6
Explanation:
Coefficient states that a number that used to multiply the variable.
example: 4y + 2z
y and z are variables.
Coefficient of 4y = 4
Coefficient of 2z = 2
As per the statement:
To find the coefficient of 6x.
Here, x is the variable.
Then by definition we have;

Therefore, the coefficient of 6x is 6