Proteins are needed for growth and development of human body cells.
I’m pretty sure it’s B, sorry if I’m wrong though, it’s been a while since I’ve learned this! ☻
First aid sorry if I’m wrong
By he NIH trying a new drug to help reduce pain associated with sickle-cell anemia, it's an example of an "experiment".
An experiment involves a hypothesis (an educated guess as to what's going to happen) and trying out the hypothesis and finding the solution.
