Question

Which object in space emits light because it
releases energy produced by nuclear fusion?
(1) Earth’s Moon (3) Venus
(2) Halley’s comet (4) Polaris

Answer 1

4) Polaris

 Stars emit light with energy generated by nuclear fusion, think of the Sun as an example. Polaris is a star, it's the brightest star in the little bear constellation, and therefore the correct answer.