Please help fast for 10 points and brainlist!! And it’s multiple choice!!! ANSWER ONLY IF YOU KNOW!! PLEASE EXPLAIN PREFER AND EXPERT OR ABOOVE

Answer:
C. 19.5mm
Step-by-step explanation:
The correct answer should be C.
be a use the measurement starters before the zero. I added a picture. So you need to look at the line of the other zero matching on the ruler.