Apatient who's experiencing fainting episodes, mental confusion, and complains of nervousness is most likely to be diagnosed with

There are 88 conditions associated with confusion, disorientation, dizziness and fainting. 

Dehydration
Heat exhaustion
Drug overdose
Panic attack
Concussion

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