Answer:
A) 1
Step-by-step explanation:
degree basically means highest power.
a constant will generally be "to the power of one"
so 5^1 = 5
note that anything to the power of zero would be one
7^0 = 7÷7 = 1
so a graph that shows y = 1 could indeed of the 0th degree, but it's a single and therefore special case.
2and degree are quadratic polynomials to the power of 2, and so on.