which best describes fusion nuclear reactors?\no they use rods containing uranium for fuel.\no they are…

which best describes fusion nuclear reactors?\no they use rods containing uranium for fuel.\no they are currently used for electricity in several highly populated countries.\no they are used in some naval vessels, such as submarines.\no they have been successful, but they are very expensive to operate.
Answer
Brief Explanations:
Fusion nuclear reactors are still in experimental stages and not yet widely - used for electricity generation or in naval vessels. Uranium is used in fission reactors, not fusion. Fusion reactors have shown potential but are expensive to operate due to the high energy requirements to sustain the fusion reaction.
Answer:
They have been successful, but they are very expensive to operate.