Answer:
The correct answer is Reduced building expense and Shared resources.
Step-by-step explanation:
When an office is operated on sharing terms, the expense of the building is divided between the share holders that reduces the building expense. For example if the rent of the building is $1000 per month, and office is shared between two parties, then both parties will pay $500 each, thus the expense of rent is reduced.
Both the parties uses the same operating resources in different timings, for example, one company works in the morning and the other company works in the evening, they both use the same computers, laptops, air conditioned, etc. That is how the resources are shared between them.
But Utility expenses are not reduced, as both companies use electricity, internet, etc, and that expense will increase when both companies share an office. Similarly, flextime is not available, because they both will share the building for a fixed number of hours.