I think option #2 is also better. However, there isn't much control on how people will interpret the word "editors" or what they think the contributions are (i.e, Do they think that a "contribution" is just adding information or do they know that fixing a typo is also a contribution?). There is an open-ended question at the end of the survey that might prompt them to address that, but we can add something else to ask who they think "editors" is referring to.