What is Chicago Pile-1?
Correct answer: World's first artificial nuclear reactor

Aila Marie 🇵🇭
I always choose those option with long sentence lol 😂

Player #31390312
Player #14782264, . what would you add to the 3?

Aqueen
Aila Marie 🇵🇭, lol me too it always works

Player en_846
1940s safety management. Even though there were misgivings about a runaway chain reaction, they went ahead and did it in a densely populated area anyways.

Player Say what!?
Player #14782264, Yes, really unusual. Guess they just couldn't conjure up one more option.

Nature lover
This was the first time I saw three options only!

Excuse the Kuz
Dangerous stuff, this nuclear business. Pandora's box is open for the big game.

ronaldo
than what would you add to the 4

theyyyadoreee._ tanieee
always choose the longest answer 😂😮💨

Jocelyn
who guest like me 🙋

Vivika
No it's big picture

Vivika
i didn't know it guys

zara
why are there 3 options to this answer and not 4

BLOSSOM_270512
lol got right..
is it math?

abby
Aila Marie 🇵🇭, same😐

Belinda
Aila Marie 🇵🇭, yes your right.
I usually get correct with some things I have no idea.

Just a player
only three options rare one

Ronalyn
I don't know what is the answer but i choose the option of long sentence😁

Sakura_playz
Aila Marie 🇵🇭, I also do the same

Jerome Gumilan Alcover
THE LONG DEFINITION. IS THE RIGHT ANSWER. CHOOSE WISELY.

Yona
y 3 choises and not 4 lol

PC
Player en_846, Yes, rather stunning that was done within the city!

Abdalla
Aila Marie 🇵🇭, Lol me too 😂😂

C o s m i c v a g e
Aila Marie same

Aqueen
Wait wait wait whatt
3 answers

Player #41779236
Player #14782264, to c official

Meejaan
why there are only three options ???