How many grams of magnesium nitrate are required to produce 250. 0 ml of a 0. 0750 m solution? 1. 61 g 1. 39 g 2. 78 g 0. 800 g 2. 19 g.

Hello Alyasaalnazoua!

BC = Before Christ (Jesus Christ) 

We can eliminate B because it mentions Christ's death. 
We can eliminate C because it mentions centries, 1 century is equal to 100 years.
We can eliminate D because it mentions after Christ's birth.

The answer is A because BC means before Christ and Hakim's paper is about 200 BC.

Have a great day! I hope this helps! -Wajiha