Final answer:
Turbine blades are designed to withstand pressure, a property critical in their role of converting mechanical energy into electrical energy, hence option d) is correct.
Step-by-step explanation:
A turbine blade made of a metal alloy is primarily designed to withstand pressure. Turbine blades are critical components in electric generators, converting mechanical energy from falling water, wind, or steam into electrical energy. The blades are struck by these moving forces, causing the shaft to rotate and generate electricity. Considering the environments in which they operate, it is essential for turbine blades to be both light and strong. Metals are often chosen as materials for turbine blades due to their properties: they are shiny, solid, good conductors of electricity and heat, as well as being ductile and malleable. However, the primary characteristic for a turbine blade, in contrast to the other options such as conducting electricity, resisting corrosion, or generating heat, is to handle and resist the physical pressure exerted upon them during operation. This ensures they maintain their structure and function effectively over time.