Question

why does a transform fault cause earthquakes, but not volcanoes?
because of steam buildup in the lava
because the magma is rich in basalt
because the plates move past each other
because the plates do not touch each other

Explanation:

A transform - fault is a type of plate boundary where two tectonic plates slide horizontally past each other. This movement causes stress to build up along the fault line. When the stress exceeds the strength of the rocks, it is released suddenly, causing an earthquake. Since there is no significant up - welling of magma (which is required for volcanic activity) at transform faults as the plates are just sliding past one another, no volcanoes are formed.

Answer:

Because the plates move past each other