Question
What is the hardest substance known to man?
A. graphite
B. diamond
A. graphite
B. diamond
Answers
GPT-4o mini
B. diamond
Diamond is known as the hardest naturally occurring substance on Earth due to its crystalline structure, which allows it to withstand scratching and abrasion more effectively than any other material.
Diamond is known as the hardest naturally occurring substance on Earth due to its crystalline structure, which allows it to withstand scratching and abrasion more effectively than any other material.