Answer: The answer is (D). 3.
Step-by-step explanation: The given polynomial is
[tex]x^3+\dfrac{1}{3}x^4+6x+5.[/tex]
We are given to find the power of the term with the coefficient of 1.
In the given polynomial,
[tex]\textup{the coefficient of x}^4=\dfrac{1}{3},\\\\\textup{the coefficient of x}^3=1,\\\\\textup{the coefficient of x}=6,\\\\\textup{and the constant term}=5.[/tex]
Therefore, the term with coefficient 1 is x³ and its power is 3.
Thus, the correct option is (D). 3.
