A more thorough explanation:

Definition: A question is a query directed to a witness. It is abbreviated as Q. A categorical question is one of a series of questions.

Examples:

• During a trial, the lawyer asked the witness a question about what they saw on the night of the crime.
• The police officer asked the suspect a series of categorical questions about their whereabouts on the night of the crime.

The examples illustrate that a question is a query directed towards someone, usually to gather information or clarify a situation. In a legal setting, questions are often used to obtain testimony or evidence. Categorical questions are a series of questions that are related and asked in a specific order to gather specific information.