empty cell in loop

Hi
I am using loop and merge for answers of a multi-choice question. some questions has 2 answers, some other has 4 or 5 answers. the question I created in the survey has initial 5 answers. therefore, loop and merge takes empty cell as answers for the questions sometimes which does not look professional. How I can change the code to ensure that when the cell is empty, it does not show in the question.