The answer is c (I think)
I mean you can perform a procedure called a tracheostomy. Idk if this is the answer you want tho
Answer:
The xylem is one of the two types of tissue transported from the vascular plants, the other being the phloem.
The outer planets are D. larger and less dense.
The outer planets are known as the gas giants they have no solid surface.
The inner plants are much smaller and do have solid surfaces.
Hope this helps.