Can someone please explain this to me? Thank you?

The answer is D, because not enough information is given to answer the question.

D) => answer

What we see, in your picture, is a circle with centre at P, tangent to the x-axis and the y-axis.
(therefore the (x, y) position of P will have the same value for x as it does for y)

It appears that the circle extends to x=1 (at the same level as point P) and to y=1.
This would imply that the radius is 0.5
and that the point P is at (x, y) = (0.5, 0.5) or (1/2, 1/2) -- same thing.

In the box, under the drawing, there is a heading "QuantityA" with a symbol "x" under it, and another heading "QuantityB" with a "90" under it.

We have no idea what "QuantityA" means (and no idea about QuantityB either).
Therefore it is impossible, for us, to make sense of choices A, B and C in the answers (where we need to compare QuantityA with QuantityB).

Chances are they are asking you about the x and y coordinates of point P.
If so, and if the curve is a circle tangent to both axes, then the x and y coordinates of P are equal.
Reason: all radii of a circle have the same length.

(but why wouldn't the question say that it is asking about P and P is center of a circle tangent to both axes???)

Oh, now I see, there is a not enough information choice.

TERRIBLE QUESTION (not yours, but whoever asked it of you).

Shows you are smart enough to know the answers are not right

yes, someone will find you. You're welcome

just quit and sleep
life is easier than this

Thank you all for your help. But according to the solution, the answer is B and this is the given explanation: 2x+x = 360 – 120 => 3x = 240 = > x = 80

I don't understand how x=80 or how they even put together the equation to figure that out.