View Source ExTDLib.Object.PollTypeQuiz (ExTDLib v0.0.4)

A poll in quiz mode, which has exactly one correct answer option and can be answered only once.

NameTypeDescription
correct_option_idnumber0-based identifier of the correct answer option; -1 for a yet unanswered poll.
explanationformattedTextText that is shown when the user chooses an incorrect answer or taps on the lamp icon; 0-200 characters with at most 2 line feeds; empty for a yet unanswered poll.

More details on telegram's documentation.