Final answer:
The correct answer is e) Both a and c are correct.
Step-by-step explanation:
The correct option is e) Both a and c are correct.
The given statement, "The combined number of widgets and zurls made each day cannot be more than 12" can be represented as: W + Z ≤ 12 (Option a).
And the statement, "The maximum number of widgets the factory can produce in a day is 4" can be represented as: W ≤ 4.
Combining both statements, we have: W + Z ≤ 12 and W ≤ 4. This can be simplified as: W + Z ≥ 12 (Option c). Therefore, both option a and option c are correct.