Aerial fiber optic cables must either be self-supporting or:

Aerial fiber optic cables are typically designed to be supported in a way that ensures reliability and stability in their installation. When fiber optic cables are not self-supporting, they need an external means of support to prevent sagging or damage. Lashed to a high-strength steel wire is a common and effective method of providing this support.

High-strength steel wire can handle the tension and environmental stresses placed on aerial cables, including factors like wind, temperature fluctuations, and ice loading. This method allows for the secure placement of cables over long distances while maintaining safety and function. It also helps to minimize the risk of the cables becoming damaged, thus ensuring a more reliable telecommunications infrastructure.

While the other options may hint at different methods of installation or cable protection, they do not adequately describe a standard support method for aerial cables specifically, which is why opting for high-strength steel wire is considered the correct answer.