Answer:
B is the correct answer
Explanation:
Functions or expressions are given degrees based on their highest exponent on the variable.
The larger the value of the exponent, the higher the degree. In this example,
6x² has a degree of 2 because 2 is the highest exponent of x
18x^3 + 5ab − 6y has a degree of 3 because 3 is the highest exponent of x
8a − 5 has a degree of 1 because the highest exponent of a
4x^3y + 3x^2 − xy − 4 has a degree of 3y
So IV has the highest degree, followed by II, followed by I, and III has the lowest degree