What does it mean to work on a question?
For research questions it can mean interviewing people, doing searches, assessing data and reports, observing and making sense of seemingly chaotic patterns.
For experiment questions, it can mean designing and testing something, using learning from tests to modify designs and changing test contexts, conditions and scopes.
For launching questions, it can mean implementing something, getting something started, making something happen.
For growth questions, it can mean adding, modifying or simplifying the features of something, scaling or spreading it.