Which of the following best describes a benefit of using a fly-by-wire system in aviation?

A fly-by-wire system significantly enhances the mechanical design of an aircraft by replacing traditional mechanical linkages between the control surfaces and the pilot's controls with electronic signals. This advancement allows for a more streamlined design, as it reduces the number and complexity of mechanical components needed, such as cables and pulleys, which can weigh down the aircraft and require more maintenance.

Moreover, the electronic nature of fly-by-wire systems enables advanced functionalities like flight envelope protection, improved stability, and automatic adjustments to control inputs that enhance safety and efficiency. This results in not only a lighter design but also a system that can adapt to various flying conditions more effectively.

The other options are not aligned with the advantages of a fly-by-wire system; for instance, it does not mandate physical control surfaces but rather allows for control inputs to be managed electronically. It also aims to reduce pilot workload rather than increase it, as many systems are designed to automate specific tasks. Finally, redundancy is actually a key consideration in fly-by-wire systems, ensuring safety through multiple pathways for control signals in case of failure, rather than eliminating it.