The correct identification of the relationships between earthquakes and tsunamis in the options you've provided is:
Earthquakes: landslides
Tsunamis: move blocks of land up or down
- Earthquakes can indeed trigger landslides due to the sudden shaking of the ground.
- Tsunamis can cause changes in land level, effectively moving blocks of land up or down as a result of the massive water displacement they create when they hit the shore.
So, this option correctly reflects the relationship between these two natural phenomena.