The correct answer is c :) the point is described by two variables: x and y. it is written like that: (x, y). so the first variable in brackets is the x variable. the other is y. so pick every point a-d, put these values into the equation, solve it and check if the values before and after = are the same. if so - you are correct! look: c) (1, 5) so x=1, y=5 equation: y=5^x putting values: 5=5^1 and this is true!
