well grounded (adj)

1based on good evidence or reasons: soundly based; well founded.
2having a good training in or knowledge of a subject.

Benchmark 2

Programmes, projects and campaigns based on evidence and analysis, with clear rationales

In order to make a change, it is important for the people in an organisation to have a good understanding of what it is they are trying to influence, why, and how they might go about doing it. This will involve carrying out some research before taking decisions about what to do, and then keeping an eye on how things develop so that they can make adjustments if the context changes or if their initiative is not working. In addition, if an organisation wants to campaign or lobby, in order to be seen as a legitimate actor it will need to be sure about its facts and be confident that its arguments are well founded before it communicates its key message to the public or decision-makers.