The most appropriate answer is D ! as other three are not related to cilia any way !
so D
if you want more info on this, comment !
True, you should eat approximately two cups of vegetables per day.
Although it depends on the person you are and if you work out of not, you will need more or less intake of vegetables, but the lowest you need is two cups a day. For girls, active or not, they need at least 2 1/2 cups of vegetables per day. For guys, active or not, they need at least 3 cups of vegetables per day.
Answer: I believe that it is not safe because if you were to say crush it up and snort it and you thought that is wasn't working so you did another and then maybe another then you might be taking more then what you where supposed to take in one setting.
Hope it makes since.