Essay question type
From MoodleDocs
Database tables
None.
Response storage
The response from the student in $state->responses[''] is the text of the essay written by the student. This was perhaps once stored in the 'answer' field in the quiz_states table.
In Moodle 3.4, look for responses in table 'question_attempt_step_data', in the 'value' field.
Question->options
None.
State->options
None.
