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Consider a survey question that asks a question and then gives instruction about how to respond. For example,

Is this a sample survey question? Check all that apply:

__ yes

__ no

Is it best practice to end "Check all that apply" with a colon because a list of options follows, or a period because the sentence giving instructions is finished?

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up vote 0 down vote accepted

I think that it is at the very least a good practice to separate an enumeration or an explanation and a clause that is to be enumerated or explained, with a colon. It acts like a logical separation of two parts.

Another thing worth mentioning is that a bulleted list should be treated differently: either list items should be separated with a semicolon, except for the last one terminated with a full stop, or each separate statement should be turned into a sentence with a capitalized letter and a full stop.

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