Answer
d
Work Step by Step
Since there are two x atoms for every one y atom in the resultant molecule, we are looking for a picture with tri-atomic molecules, where two of the atoms are blue. Option d matches this description.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.