Final answer:
Workplace hazards can include poor lighting in offices, cold weather for outdoor workers, and improperly stored equipment in hallways; all examples given are correct.
Step-by-step explanation:
An example of a hazard in the workplace includes all of the following: A. Poor lighting in offices, which can lead to eye strain and accidents; B. Cold weather for workers working outside, which can result in hypothermia or frostbite; and C. Equipment stored in an active hallway, which could cause tripping or obstruct emergency exits. Therefore, the correct answer is D. All of the above.