components have minimal dependence on each other, which simplifies testing, maintenance and troubleshooting because problems are easy to isolate and unlikely to spread.

Answer: Loosely connected

Explanation:

Loosely connected components are those elements that are part of system. Loose components are not tightly-coupled and have some amount of separation present between their link. These components do not depend on each other at high rate.

As the link between components have little space, it is most likely to clarify the task of testing. Reach and investigation of link and element is easy in this scenario as well as any fault can be troubleshooted through simple searching for repairing it. It also maintains non-spreading default environment because the connections are not tight.