Answer:
It is something you make after you've weighed your options.
Sitting down you have it, Standing up you don't.
I occur twice in eternity. And I'm always within sight.
What has to be broken before you can use it ?
What has a neck and no head, two arms but no hands?
Lynn likes grapes but not potatoes. She likes squash but not lettuce, and she likes peas but not onions. Following the same rule, will she like pumpkins or apples?