What has to be broken before you can use it? What question can you never answer yes to?
There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What color are the stairs?
It is once in a minute twice in a moment but never in a thousand years. What is it?

-an egg

-are you dead?

-you don't need stairs in a one-story house

-M

Explanation:

1) eggs

2) are you dead?

3) yellow

4) letter M

Explanation:

"the idea of humanism is mostly adeptly reflected in renaissance art by a focus on the body itself, especially with sculpture, where many detailed portraits of the human body (such as the david) were created."