Answer
Drawing c.
Work Step by Step
This substance should completely dissolve in water, so none of the atoms should be bonded to each other. The only drawing that shows no bonding is drawing c.
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.