WHy is it when I don't tell people my birthday, or when I say I don't like to celebrate my Birthday, people automatically assume that I think I'm too mature and think birthday parties are for kids, when in reality I just like to be alone, and never had enough IRL friends to come to my parties...

What you should re write your question it doesn’t make sense

The answer is d. worthless

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

Nail fungus, which can cause the nails to crack, peel and change color and texture.