Given,
f(c) = 0
Let's check all the choices,
• B. The point (c,0) lies on the graph of f(x).
This is true since plugging in "c" into the function yields "0".
• C. x - c is a factor of f(x).
Since the value "c" yields "0" as an output, we can say that x - c is a factor of the function.
D. c is a 0 for f(x).
This is true. Since an input of "c" yields "0" as an output, this is known as a zero of the function.
All three statements, B, C, and D, are true.
A is the correct answer.