saki went on vacation and was fortunate enough to get to see the aurora australis. what solar activity did…

Brief Explanations:

Auroras, including the aurora australis, are caused by solar winds. Solar winds are streams of charged particles released from the Sun's corona. When these particles interact with Earth's magnetic field and atmosphere, they create the colorful light - displays known as auroras. Solar flares are sudden bursts of energy, sunspots are dark areas on the Sun's surface, and prominences are large, bright features extending from the Sun's surface, none of which directly cause auroras like solar winds do.

Answer:

solar winds