Explanation: Words are written as they sound, as for questions similar to this, it’ll always be the answer that represents the form of the answer A. It is A for A p e x! Good luck, and have g’day! Also provided a picture, as I have the same test!
Your best choice is going to be "intrinsically". When someone is "intrinsically motivated" it is because they enjoy what they are doing to achieve their goal.
