Hello there!
Your answer would be (68,00) because when rounding to the nearest 10th, we basically look at the tenth place.
6(8).
 Number 8 is the 10th place, and it is over 5 to pass to line.
It goes right back up.
Your answer would be the (option b)
A. 69,000 
B. 70,000 
C. 68,000 
D. 60,000
I hope this helps you!