In the short run, these workers are variable inputs, and the ovens are Fixed inputs.
Step-by-step explanation:
By analyzing the information, we can understand that, Megan can grow slowly and steadily because the constraint here is that, Megan has so many people to work but they are students and he cannot buy more than 2 oven's at present considering his financial background and the size of the kitchen.
So the wise work is that, he keeps changing the number of workers every time but the number of oven to be used every time is only 2.
So workers are variable (changing) and ovens are fixed.