Answer:
Of the given polynomials, only option C is a quartic trinomial, as it is degree 4 and consists of three monic terms, each having a coefficient of 1:-2x^4 + 7x^2 - 5
Explanation:
A quartic trinomial is a degree 4 polynomial consisting of three distinct monic terms, each having the same coefficient. A monic term is a polynomial term whose highest exponent is 1 and whose coefficient is 1.
Option A is a quadratic trinomial (degree 2) and options B and D are not degree 4 trinomials.