Question

in this illustration, what does example a show?
○ ocean spreading
○ rift valley
○ trench
○ hot spot

Explanation:

To determine what example A shows, we analyze the geological features:

• "Ocean spreading" (seafloor spreading) involves new oceanic crust forming at mid - ocean ridges as tectonic plates move apart. The illustration for A depicts a mid - ocean ridge - like structure with magma rising, consistent with seafloor spreading.
• A rift valley is a linear valley formed by rifting (continental plate separation), not matching A's ocean - related, mid - ridge look.
• A trench is a deep depression at subduction zones (one plate subducting under another), not what A shows.
• A hot spot is a stationary mantle plume creating volcanoes (like Hawaii), but A shows a ridge - related process, not a hot - spot volcano.

Answer:

ocean spreading