According to the c-d-c, at the end of 2007, how many people in the united states were living with h-i-v or aids?

At the end of 2007, an estimated 551,932 persons in these states were living with HIV/AIDS.

Bmust be the answer, as technically all organs move, so a is incorrect. all organs are made of different types of cells, so that isn’t a problem, so c is also incorrect. human hearts are very similar to many other animals’ hearts, so d is also incorrect, yet the heart is made of muscle, which is hard to grow in the lab so it would be correct to say b