For example; I am constructing a web page that asks two questions. The first question is titled Marital status: from a list of choices; there can be only one. The other is a multiple-checkbox asking Devices owned, here there could be none, some, or all choices selected.
I'm seeking a word which differentiates the two types with respect to how one allows multiple selections, and the other does not. Words that are close, but don't cut it are things like "multiplicity", "factor" or "deviation".
In computer programming we use such interesting words like singleton, scalar, and idempotent. Is there a discriminating word for "multiple choice / single choice"?
It's difficult to put into a sentence without getting too technical, I'm building an application that has different strategies for validating answers based on if they are multiple choice or not. There are two strategies: one for answers that can only have one choice selected at a time, and one that can have N choices. The "strategy" is used to determine which [insert word] validation strategy to employ.