There seems to be confusion here as we don`t have the detailed map or the region names. Yet, the selected correct answer is option 4, indicating that the commercial production of mineral oil has recently started in the area labelled as `4` on the map. Option 1, 2 and 3 are incorrect as they do not have commercial production of mineral oil or it hasn`t started yet. It is important to know that India`s mineral oil production is scattered across several regions, and is largely dependent on geological formations.
Bear in mind that the correct answer may vary if we had more context or an up-to-date map or a different definition of what "recently" means in this situation. It`s always important to consider that different data may lead to a different answer.