In order to find how many centimeters are in 15 kilometers, we can use the following conversion rate:
1 km = 100,000 cm.
So, for 15 kilometers, we have:
[tex]15\text{ km}=15\cdot(100,000\text{ cm})=(15\cdot100,000)\text{ cm}=1,500,000\text{ cm}[/tex]Therefore the correct option is C.
