Final answer:
Observing a jump in utilization only at station 2 (and not at stations 1 and 3) when transitioning from 1 lot of 60 to 2 lots of 30 suggests that station 2 is the bottleneck in the process.
Step-by-step explanation:
If you observe a jump in utilization only at station 2 (and not at stations 1 and 3) when you change from 1 lot of 60 to 2 lots of 30, it suggests that station 2 is the bottleneck in the process. The utilization at station 2 increases because it now has to process twice the number of lots as before. This indicates that station 2 is working at or near full capacity, causing a bottleneck in the overall process.