Answer:
B
Step-by-step explanation:
Standard form of a polynomial is when the terms are order from highest exponential power to lowest exponential power. The choice you chose has the highest exponential power of 1, and a leading coefficient of 1. You are incorrect. The correct answer would be the second choice of:
[tex]5 {x}^{2} + 6x - 7[/tex]
This polynomial is in standard form, and has a leading coefficient of positive 5.
