Answer:
Option b - It is in standard form because the exponents are in order from highest to lowest.
Step-by-step explanation:
Given : Polynomial 
To find : Which statement best describes the polynomial?
Solution :
A polynomial means many terms added together is consist of constant, variable and exponent.
For example - 
Where, constant is d, variable is x and exponent is power 3,2,1.
In the given polynomial, 
There is no constant, variable is x and y and highest exponent is 8.
From the given statements the polynomial is describe as
It is in standard form because the exponents are in order from highest to lowest.
Therefore, Option b is correct.