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Answer:
Polynomial
Step-by-step explanation:
⇒ It cannot be option 1 as y does not vary with an exponent
⇒ It cannot be option 2 as y does not relate to any logarithmic values of x
⇒ It cannot be a option 4 as there no irrational numbers under a root
⇒ Therefore it is a polynomial, as it is written in the form : y = ax³ + bx² + cx + d (cubic polynomial)