Which of the following combinations of targeting options would be considered the optimum for impressions?

The correct answer is Devices, Language and Gender because this combination provides enough specificity to reach a relevant audience while still being broad enough to maximize impressions. Including too many options, like adding location, can overly restrict your audience and reduce reach, whereas targeting only Devices or Devices and Language may be too broad and less effective. This mix strikes a balance between relevance and scale for optimal ad impressions.