It would be A. Commensalism because only the plant is being benefitted in this relationship, whilst there is no harm nor benefits done to the fungus.
It will take 15 years for Della to be in the same risk of
non-smoking persons in risk of cardiovascular disease. As you quit smoking, the
lungs will start to purify itself, but it will take some time. On the other
hand, it cannot be assured that the lungs may be totally restored, more or less
it would just be clean over a period of time.
The answer would be, if I understand correctly, skeletal and smooth muscle tissue both help the body move, and give the body form. The skeletal structure give the body structure, and the muscles help the body move.