Help the mischievous employee weigh the risks of bringing a pet iguana to the office.

_____ about Sir Scales-a-Lot, I would surely be fired on the spot!

The correct answer is Were the manager to find out.

This sentence uses second conditional inversion to describe an unlikely hypothetical situation in the present/future.

Instead of saying "If the manager were to find out," we can drop if and invert the subject and verb: "Were the manager to find out." We must use the subjunctive were for all subjects in this structure, making "Was the manager to find out" incorrect. "Did" and "Had" do not fit this specific hypothetical were to construction.