Answer:
What type of dress can never be worn?
I am a delicious way of representing data.
Everyone in the world needs me. They generously give me but never take me. What am I?
I am a rock group with four members all of whom died in plane crashes. Who am I?
I can swim but never get wet. I can run but never get tired. I follow you everywhere but never say a word. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?