To answer this question, we need to know that the standard form of an equation of this type is written as follows:
[tex]ax^5+bx^4+cx^3\ldots[/tex]
We have that the polynomial given is:
[tex]\frac{8}{7}x^3+x^4+6x+1[/tex]
In the standard form, we need to write it as follows:
[tex]x^4+\frac{8}{7}x^3+0x^2+6x+1=x^4+\frac{8}{7}x^3+6x+1[/tex]
Therefore, the correct answer is option C. This is the standard form for this fourth-degree polynomial.
