Question

what eventually causes a release of stored energy at transform fault boundaries? overcoming the friction between plates plate fusion a decrease in temperature

Explanation:

At transform fault boundaries, tectonic plates slide past each other. Friction between the plates builds up stress as they get stuck. When the stress overcomes the friction, the plates move suddenly, releasing stored energy (like in earthquakes). Plate fusion is not a process at transform faults (they involve sliding, not fusion), and a temperature decrease doesn't directly cause energy release here.

Answer:

A. overcoming the friction between plates