Answer: A) Fermat's Last Theorem was finally proven after 358 years of effort in 1994 by Cambridge professor, Andrew Wiles.
Explanation:
Unlike the other options, the first sentence is the only one that properly applies academic vocabulary, using the third-person point of view, a glossary specific to the topic, and a serious tone.
It provides enough knowledge about the background to understand the topic, and it shows clarity, as it presents the information in an easily understood manner.
