What is a notable feature of the German cockroach regarding its egg capsule?

The notable feature of the German cockroach regarding its egg capsule is that it drops it a day before hatching. This behavior is part of the cockroach's reproductive strategy. The egg capsule, known as an ootheca, contains developing embryos, and the mother carries it until just before the young are ready to emerge. By dropping the ootheca at this point, the mother improves the survival chances of her offspring by eliminating the immediate risk of predation that could occur if she were to carry it for longer. The young can then find shelter quickly after they hatch, further increasing their chances of survival in the environment.

The other choices do not accurately represent the reproductive behaviors of German cockroaches. For example, carrying the ootheca for an extended period would not maximize the chances of survival for the young. Similarly, laying eggs in water or hiding them underground are not typical behaviors of this species, which prefers to keep its egg capsules in safer, drier environments.