<em><u>In the 3rd Century BC, Archimedes: invented</u></em><em><u> </u></em><em><u>the sciences of mechanics and hydrostatics.discovered the laws of levers and pulleys, which allow us to move heavy objects using small forces. invented one of the most fundamental concepts of physics – the center of gravity.</u></em>
I know this isn't an answer, but...
Do you have a question? I can't help you if you don't. I don't see any attachments so if you wanted to attach something then you should try to re-do your question maybe.
It’s between b and d but i would choose D