Complex medical devices must be proven safe before the fda will allow them to be sold in the us. select the best answer from the choices provided.
a. true
b. false

I think the answer is a because if it wasn't many bad ideas for medicine will come and we could get hurt from them.

Bis the answer hope i  

Air goes past the epiglottis and into the trachea when you breathe in. from there, it goes to your vocal cords in the larynx until it reaches the bronchi. from the bronchi, air passes into each lung.