Question

which environment would you be most likely to find sedimentary rocks?
a river deltas
b mountain ranges
c near active volcanoes
d deep ocean trenches

Explanation:

Sedimentary rocks form from sediment deposition (like sand, mud) in low - energy environments. River deltas are areas where rivers deposit sediments. Mountain ranges have more metamorphic/igneous activity. Active volcanoes produce igneous rocks. Deep ocean trenches have high - pressure, subduction - related processes (not sedimentary rock formation). So river deltas are ideal for sedimentary rock formation.

Answer:

a. River deltas