Before finding the function that describes the graph we can at a glance identify the following:
Y-intercepts

X-intercepts or the roots

Other point given

with the given points we will replace in each function to identify the correct one. we will start with (0,4)




After analyzing the y-intercept we can see that the function it fulfills is letter C
To verify it, we will replace the additional point and see if it gives the expected result:

With this we can confirm that the function of the letter C describes the figure