Dickinson supports her idea that poetry is more expensive than prose by

AObtaining the perspectives of knowledgeable people.
BImagining a life full of wonder.
CComparing poetry to a house without restraints.
DExplaining that prose is never effective communication.

Verified Answer :

Dickinson supports her idea that poetry is more expensive than prose by comparing poetry to a house without restraints, meaning that C is the correct answer.