Place a question mark at the end of any sentence that is a direct question.
Who wrote that report?
If the question is a direct quotation repeating the speaker’s exact words, a question mark is still used.
“Who wrote that report?” she asked.
Other types of questions
Indirect questions
Do not use a question mark in an indirect question, in which the speaker’s exact words are not repeated. Use only a full stop, since the whole sentence is now a statement.
She asked who had written that report.
Courtesy questions
If a request or instruction is put as a question for reasons of courtesy, do not use a question mark.
Would you please fill in and sign the attached application and submit it before the end of the month.
«Question marks» [en línia]. A: Llibre d’estil de la Universitat de Barcelona. Barcelona: Universitat de Barcelona. Serveis Lingüístics. <https://www.ub.edu/llibre-estil/criteri.php?id=2309> [consulta: 21 novembre 2024].