Final answer:
The drawing where Earth is on the left and the Sun is on the right represents summer in the Southern Hemisphere.
Step-by-step explanation:
The drawing that should be used to represent summer in the Southern Hemisphere is the one where Earth is positioned on the left and the Sun is positioned on the right. In this drawing, the Earth is tilted towards the Sun, which results in the Southern Hemisphere experiencing summer.
Learn more about Seasons and Earth's tilt