Final answer:
Hydraulic brakes represent an example of a fluid core technology system. Other options provided do not fall under this category.
Step-by-step explanation:
Of the options provided, hydraulic brakes represent an example of a fluid core technology system.
A fluid core technology system is a system that utilizes fluid as its core component to perform a specific function.
In the case of hydraulic brakes, fluid (usually hydraulic fluid or brake fluid) is used to transmit force from the brake pedal to the brake calipers, resulting in the application of pressure on the brake pads and stopping the vehicle.
The other options (remote control, fireplace, and solar panels) do not fall under the category of fluid core technology systems as they do not primarily rely on fluid to carry out their main functions.