The correct option is A 7
Concept Involved––––––––––––––––––––:
The degree of a polynomial is a whole number that is the maximum total exponent of the variable left after simplification and reducing to simpler terms.
Method–––––––––:
30x2+4x3+60x7+8
This polynomial has highest exponent as 7 which lies in 3rd term. The degree of the polynomial is 7.