The correct answer would be D., Charles Darwin because he was the on who made major discoveries about evolution.
Freedom of speech and just freedom in general
Answer:
The "grave danger" that the author is talking about is the danger of atomic weaponry
Explanation:
"Preliminary Statement of the Association of Manhattan District Scientists" was a 100-page report written after the atomic bombings in Hiroshima and Nagasaki.
The "grave danger" that the scientist is talking about in the article is the dangers of atomic weaponry. The article talks about the consequences that wrong decisions of leaders may have on its nations.
After the Mongols defeated the Delhi Sultanate in India during the 16th century, the Islamic religion advanced into Central Asia.
I hope this helps! Have a nice day! :)