Answer:
I have 24 keys but cannot open any locks. Sometimes loud, sometimes soft. What am I?
I am a room that has a roof but no walls. What am I?
I am a mother from a family of eight. Spins around all day despite my weight. Had a ninth sibling before founding out it's fake.
A dagger thrust at my own heart dictates the way I'm swayed. Left I stand and right I yield to the twisting of the blade. What am I?
I have all the knowledge you have. But I am so small that I can fit into your hands. What am I?
It is something you make after you've weighed your options.