Answer:
Option B. 3.13 meters
Step-by-step explanation:
A refrigeration assembly line travels from start to finish = 3,000 meters.
It takes 2 days of 8 hour workdays for a single unit to go from start to finish.
2 days of 8 hour workdays = 8 × 2 = 16 hours
∵ 1 hour = 60 minutes
∴ 16 hours = 60 × 16 = 960 minutes.
Now we will divide total distance to 960 minutes.
The line move each minute = 
= 3.125 ≈ 3.13 meters/ min.
The line moves 3.13 meters each minute.
Option B. 3.13 meters