Answer: Allusion
Explanation: An allusion is a literary device used to reference another object outside of the work of literature. The object can be a real or fictional person, event, quote, or other work of artistic expression.
Certitude . i have absolute certitude in this matter
Where a person or species lives in or occupies
1/4 is smaller
1/2 is equal to 0.5 and 1/4 is equal to 0.25