which kind of wave would be observed in outer space between planets, where there is very little matter?\n an…

which kind of wave would be observed in outer space between planets, where there is very little matter?\n an electromagnetic wave, such as an x - ray\n an electromagnetic wave, such as a sound wave\n a mechanical wave, such as an x - ray\n a mechanical wave, such as a sound wave
Answer
Answer:
A. an electromagnetic wave, such as an x - ray
Brief Explanation:
Electromagnetic waves can travel in a vacuum (space with little matter). Mechanical waves like sound waves need a medium to travel. X - rays are electromagnetic waves.