A: Social Security Number (S.S.N.)
B: Year To Date (YTD)
C: Tax Form (W-4)
D: State Unemployment Insurance (SUI)
It’s just abbreviated so you can find out the answer from the first letter of each word.
The hazard prevention or control method that applies to such a situation is maintenance of the facility where the hazardous materials are kept and regular checking of the equipment's of fire control. This methodology can actually become the lifesaver for all the workers and employees in the workplace.