Final answer:
Facilities management should keep irrigation systems, fire protection systems, street cleaning, and vehicle washing facilities well-maintained.
Step-by-step explanation:
Four exterior spaces that facilities management should keep well-maintained include:
- Irrigation systems for public parks, sporting facilities, private gardens, and roadsides
- Street cleaning to keep the surroundings clean and free from litter
- Fire protection systems to ensure safety and compliance
- Vehicle washing facilities for maintenance and cleanliness