Question

the san andreas fault is the boundary between two of earths tectonic plates: the pacific plate and the north american plate. this boundary is a transform boundary. the pacific plate is moving to the north and west, while the north american plate is moving to the south and east. what type of stress is most likely to occur at this boundary? shearing syncline tension compression

Explanation:

At a transform - plate boundary like the San Andreas Fault, where two plates slide past each other horizontally, the type of stress is shearing. Shearing stress occurs when forces act parallel to the surface in opposite directions. A syncline is a fold in rock and not a type of stress. Tension occurs at divergent boundaries and compression at convergent boundaries.

Answer:

shearing