The most effective and efficient representation for communicating information about the climates of the seven continents would be:
An image showing the layout of the seven continents, with each continent containing several color-coded areas, where a color code is a color commonly associated with a climate’s weather. The image communicates a continent’s climate by showing areas where the climate occurs, relative sizes of the areas, and an overall comparison between continents.
This option is preferred because it visually represents the geographical distribution of different climates, allows for immediate comparison between continents, and conveys both the extent and relationship of different climates in a clear and intuitive manner. Visual representations are often easier to understand at a glance compared to textual or numeric data.