How do you filter your mulitple choice responses?

I'm sorry, is this related to your forum thread posted on March? There is no option you can filter the items in the submissions page or separate the options. A workaround would be to download the submissions as Excel and then filter items into a different cell using the Filter function. You can also use the Split (Text to Column) function.

To filter: https://support.office.com/en-us/article/quick-start-filter-data-by-using-an-autofilter-08647e19-11d1-42f6-b376-27b932e186e0.

To split: https://support.office.com/en-us/article/split-a-cell-f1804d0c-e180-4ed0-a2ae-973a0b7c6a23.