What defines two advantages of virtual test environments?

The correct choice highlights the benefits of virtual test environments by stating that they offer lower costs and are suitable for API testing.

Lower costs are a significant advantage of virtual test environments because they eliminate the need for physical hardware, which can be expensive to procure, maintain, and manage. By utilizing virtual environments, organizations can allocate resources more efficiently, reducing overhead associated with the physical space and equipment.

Suitability for API testing is another key advantage. Virtual test environments can be tailored to simulate various conditions and scenarios that APIs may encounter in real-world operations. This flexibility allows developers to test their APIs more thoroughly, ensuring that they work properly across different systems and under various conditions without needing to set up extensive physical infrastructure.

The other options do not accurately capture the key strengths of virtual test environments. For instance, high maintenance and testing capabilities are contradictory, as higher maintenance typically leads to inefficiencies. Performance testing is vital, but when combined with high costs, it undermines the practical advantages that virtual environments typically provide. Lastly, requiring supervision implies a need for constant oversight, which contradicts the efficiency and independence that virtualized environments are meant to promote.