Question

landslide
a landslide encompasses a broad spectrum of soil movements.
erosion
is the process of erosion trans - port fine sedimentation of soil.
crystallization
during the cooling process of magma, crystallization begins as a consequence of the decrease in temperature.
different geological processes act at different rates, ranging from extremely fast acting on fractions of seconds to minutes to days to very slow acting over millions to billions of years.
click on the card that represents a fastest process.

Explanation:

Landslides can occur suddenly, often within seconds to minutes. Erosion is a gradual process that can take years to decades or even longer to cause significant changes. Crystallization of magma also occurs over long - time scales as magma cools slowly beneath the Earth's surface or during volcanic eruptions which still take time compared to a landslide. So landslides are generally the fastest among these geological processes.

Answer:

Landslide