These. it is demonstrating what the speaker is taking about
Where is the discussion?
First put the discussion in your question please so that we answer.
Answer:
The brain/human mind is c) wide, deep and weighty
Explanation:
Dickinson explores how complex and special the mind is as she compares it to the sky's limit and the depths of the ocean (various posibilities of physical dimension) , and the weight of God (spiritual dimension).