Calculate the radiation dosage in grays for a 55 ‑kg person who is exposed for 3.0 s to a 3.0 Ci source of beta radiation. Assume that 100% of the radiation is absorbed and that each beta particle has an energy of 1.6×10−13 J.

african americans demonstrated their newly found freedom by relocating often in search of relatives whom they had been separated from during slavery. others established schools to educate freed people and they built institutions such as churches and political organizations to advocate for their rights.

i think it is d. e because the next one is igneous.