Answer:
6.3 cm
Step-by-step explanation:
The distance from each centimeter is divided into 10 parts. Point A starts at 0 and goes until right before 6.5. The big line between each whole number signifies that you are halfway through the centimeter. As you can see, point B is right before a big line, so can't be bigger than 6.5 nor equal. The only option that fits this is 6.3 cm
