ICAO Annex 11 - Air Traffic Services 
2.22 Coordination between aeronautical information services and air traffic services authorities

2.22.1 To ensure that aeronautical information services units obtain information to enable them to provide up-to-date pre-flight information and to meet the need for in-flight information, arrangements shall be made between aeronautical information services and air traffic services authorities responsible for air traffic services to report to the responsible aeronautical information services unit, with a minimum of delay:

a) information on aerodrome conditions;

b) the operational status of associated facilities, services and navigation aids within their area of responsibility;

c) the occurrence of volcanic activity observed by air traffic services personnel or reported by aircraft; and

d) any other information considered to be of operational significance.

Let's examine the options given:

1. Aircraft had to return to terminal 2 due to damaged door. → Does not have a significant effect on the operations of the rest aerodrome.
2. PSG VOR is unserviceable. → Operational status of a navigation aid.
3. Snow clearing and deicing operations are in progress on the runway and the taxiways. → Information that has operational significance (affects the operations of the aerodrome significantly).
4. Terminal 3 had been closed for passengers for 4 months. No change is expected. → Does not have a significant effect on aircraft operations.
5. High traffic on an airport access road due to snow. → Does not have a significant effect on aircraft operations.
6. Access to terminal is slow due to snow. → Does not have a significant effect on aircraft operations.