I think A or D is correct please help will reward brainlest

The answer to this question is D: 2. To solve this, you must work backwards, and what's the oppsite of addition? Subtraction! Take 2.34, your final answer, and subtract .34 from it, and you end up with 2! I hope this helped! Could I possible get brainliest?
The correct answer is D because 2.0 + 0.34 = 2.34
sense 2 is a whole number and that .34 is less then a whole number you just replace that 0 with the 2 sense that 0 is just filling in the place
HTH ^^