Final answer:
The right sequence for order processing according to the question is to take the first order, assemble the second, then take the third order and go back to assemble the first, which corresponds to option A) 1st, 2nd, 3rd.
Step-by-step explanation:
The correct answer to the given sequence for keeping the flow moving is: A) 1st, 2nd, 3rd. You take the first order, then without an assembler you should immediately proceed to assemble the second order. After this, you take a third order and then go back to assemble the first order. The flow can be visualized as follows:
- Take the first order.
- Assemble the second order.
- Take the third order.
- Assemble the first order.