Hazard: A potential source of harm or adverse health effects.

Risk: The likelihood of harm occurring as a result of the hazard.

Danger: An immediate threat that requires urgent action.

Analysis of Options:

A. Conference room emergency sign directs people to an exit that is no longer available for use (Hazard):Correctly identified as a hazard since it poses a potential risk during emergencies.

B. The carpet on the main staircase is peeling off (Risk):This is a hazard, not a risk, as it represents a source of potential harm.

C. The emergency light in the gift shop did not work when checked (Risk):This is a hazard because it is a condition that could lead to a risk during emergencies.

D. The fire extinguishers in the Natural World area have not been serviced in the last five years (Risk):Correctly identified as a risk because the likelihood of fire-related harm increases without proper servicing.

E. The head of the dinosaur suspended over the main hall has become detached from the rest of the skeleton (Risk):This is a hazard, not a risk, as it represents a potential source of harm.

F. The non-slip mats have been removed from the restaurant (Risk):This is a hazard, not a risk.

G. There is a high possibility of unfit food being sold due to the failure of the oven temperature indicator in the visitors ' restaurant (Hazard):This is a risk because it specifies the likelihood of harm occurring (selling unfit food).

H. There is a water leak next to the electric heater in the admissions area (Danger):Correctly identified as a danger because it represents an immediate and critical threat.

ISO References:

Clause 6.1.2: Hazard identification and assessment of risks and opportunities.