Answer:
C
Step-by-step explanation:
given 3[tex]x^{6}[/tex] + 5 - x² + 4[tex]x^{5}[/tex] - 9x
The degree of a term is determined by the value of its exponent.
A term of degree 5 has an exponent of 5
In the polynomial given this term is 4[tex]x^{5}[/tex]
With a coefficient of 4 → C