The correct answer is A. were discovered by accident
Explanation:
X-rays are a type of radiation mainly used for medical uses as this radiation allow doctors to create images of inner structures that are helpful for diagnosis, also, X-rays are used as part of radiotherapy to treat cancer. Additionally, X-rays were discovered in 1895 by Wilhelm Rontgen who discovered them by accident as he studied electrical discharge tubes and noticed there was an unknown or "x" type of radiation, based on this, he described X-rays and even use them to create an image of his hand. Thus, the answer is X-rays were discovered by accident.
It was "Vladimir the Great" who ordered Russians to convert to Orthodox Christianity, since he was very much impressed by the Orthodox churches in Constantinople.
Tomochichi believed that befriending Oglethorpe would benefit his people and form a new trading partnership. Tomochichi led the settlers to Yamacraw Bluff overlooking the Savannah River. This became the first settlement of the new Georgia colony.
